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"
55 #include "iwl-helpers.h"
60 * module name, copyright, version, etc.
63 #define DRV_DESCRIPTION \
64 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
66 #ifdef CONFIG_IWL3945_DEBUG
72 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
78 #define IWL39_VERSION "1.2.26k" VD VS
79 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
80 #define DRV_AUTHOR "<ilw@linux.intel.com>"
81 #define DRV_VERSION IWL39_VERSION
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
87 MODULE_LICENSE("GPL");
89 /* module parameters */
90 struct iwl_mod_params iwl3945_mod_params = {
91 .num_of_queues = IWL39_MAX_NUM_QUEUES,
93 /* the rest are 0 by default */
96 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
101 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
102 * of buffer descriptors, each of which points to one or more data buffers for
103 * the device to read from or fill. Driver and device exchange status of each
104 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
105 * entries in each circular buffer, to protect against confusing empty and full
108 * The device reads or writes the data in the queues via the device's several
109 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
111 * For Tx queue, there are low mark and high mark limits. If, after queuing
112 * the packet for Tx, free space become < low mark, Tx queue stopped. When
113 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
116 * The 3945 operates with six queues: One receive queue, one transmit queue
117 * (#4) for sending commands to the device firmware, and four transmit queues
118 * (#0-3) for data tx via EDCA. An additional 2 HCCA queues are unused.
119 ***************************************************/
122 * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
124 static int iwl3945_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
125 int count, int slots_num, u32 id)
128 q->n_window = slots_num;
131 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
132 * and iwl_queue_dec_wrap are broken. */
133 BUG_ON(!is_power_of_2(count));
135 /* slots_num must be power-of-two size, otherwise
136 * get_cmd_index is broken. */
137 BUG_ON(!is_power_of_2(slots_num));
139 q->low_mark = q->n_window / 4;
143 q->high_mark = q->n_window / 8;
144 if (q->high_mark < 2)
147 q->write_ptr = q->read_ptr = 0;
153 * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
155 static int iwl3945_tx_queue_alloc(struct iwl_priv *priv,
156 struct iwl_tx_queue *txq, u32 id)
158 struct pci_dev *dev = priv->pci_dev;
160 /* Driver private data, only for Tx (not command) queues,
161 * not shared with device. */
162 if (id != IWL_CMD_QUEUE_NUM) {
163 txq->txb = kmalloc(sizeof(txq->txb[0]) *
164 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
166 IWL_ERR(priv, "kmalloc for auxiliary BD "
167 "structures failed\n");
173 /* Circular buffer of transmit frame descriptors (TFDs),
174 * shared with device */
175 txq->tfds39 = pci_alloc_consistent(dev,
176 sizeof(txq->tfds39[0]) * TFD_QUEUE_SIZE_MAX,
180 IWL_ERR(priv, "pci_alloc_consistent(%zd) failed\n",
181 sizeof(txq->tfds39[0]) * TFD_QUEUE_SIZE_MAX);
196 * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
198 int iwl3945_tx_queue_init(struct iwl_priv *priv,
199 struct iwl_tx_queue *txq, int slots_num, u32 txq_id)
205 * Alloc buffer array for commands (Tx or other types of commands).
206 * For the command queue (#4), allocate command space + one big
207 * command for scan, since scan command is very huge; the system will
208 * not have two scans at the same time, so only one is needed.
209 * For data Tx queues (all other queues), no super-size command
212 len = sizeof(struct iwl_cmd);
213 for (i = 0; i <= slots_num; i++) {
214 if (i == slots_num) {
215 if (txq_id == IWL_CMD_QUEUE_NUM)
216 len += IWL_MAX_SCAN_SIZE;
221 txq->cmd[i] = kmalloc(len, GFP_KERNEL);
226 /* Alloc driver data array and TFD circular buffer */
227 rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
231 txq->need_update = 0;
233 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
234 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
235 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
237 /* Initialize queue high/low-water, head/tail indexes */
238 iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
240 /* Tell device where to find queue, enable DMA channel. */
241 iwl3945_hw_tx_queue_init(priv, txq);
245 for (i = 0; i < slots_num; i++) {
250 if (txq_id == IWL_CMD_QUEUE_NUM) {
251 kfree(txq->cmd[slots_num]);
252 txq->cmd[slots_num] = NULL;
258 * iwl3945_tx_queue_free - Deallocate DMA queue.
259 * @txq: Transmit queue to deallocate.
261 * Empty queue by removing and destroying all BD's.
263 * 0-fill, but do not free "txq" descriptor structure.
265 void iwl3945_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
267 struct iwl_queue *q = &txq->q;
268 struct pci_dev *dev = priv->pci_dev;
274 /* first, empty all BD's */
275 for (; q->write_ptr != q->read_ptr;
276 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
277 priv->cfg->ops->lib->txq_free_tfd(priv, txq);
279 len = sizeof(struct iwl_cmd) * q->n_window;
280 if (q->id == IWL_CMD_QUEUE_NUM)
281 len += IWL_MAX_SCAN_SIZE;
283 /* De-alloc array of command/tx buffers */
284 for (i = 0; i < TFD_TX_CMD_SLOTS; i++)
287 /* De-alloc circular buffer of TFDs */
289 pci_free_consistent(dev, sizeof(struct iwl3945_tfd) *
290 txq->q.n_bd, txq->tfds39, txq->q.dma_addr);
292 /* De-alloc array of per-TFD driver data */
296 /* 0-fill queue descriptor structure */
297 memset(txq, 0, sizeof(*txq));
300 /*************** STATION TABLE MANAGEMENT ****
301 * mac80211 should be examined to determine if sta_info is duplicating
302 * the functionality provided here
305 /**************************************************************/
306 #if 0 /* temporary disable till we add real remove station */
308 * iwl3945_remove_station - Remove driver's knowledge of station.
310 * NOTE: This does not remove station from device's station table.
312 static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
314 int index = IWL_INVALID_STATION;
318 spin_lock_irqsave(&priv->sta_lock, flags);
322 else if (is_broadcast_ether_addr(addr))
323 index = priv->hw_params.bcast_sta_id;
325 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
326 if (priv->stations_39[i].used &&
327 !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
333 if (unlikely(index == IWL_INVALID_STATION))
336 if (priv->stations_39[index].used) {
337 priv->stations_39[index].used = 0;
338 priv->num_stations--;
341 BUG_ON(priv->num_stations < 0);
344 spin_unlock_irqrestore(&priv->sta_lock, flags);
350 * iwl3945_clear_stations_table - Clear the driver's station table
352 * NOTE: This does not clear or otherwise alter the device's station table.
354 static void iwl3945_clear_stations_table(struct iwl_priv *priv)
358 spin_lock_irqsave(&priv->sta_lock, flags);
360 priv->num_stations = 0;
361 memset(priv->stations_39, 0, sizeof(priv->stations_39));
363 spin_unlock_irqrestore(&priv->sta_lock, flags);
367 * iwl3945_add_station - Add station to station tables in driver and device
369 u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
372 int index = IWL_INVALID_STATION;
373 struct iwl3945_station_entry *station;
374 unsigned long flags_spin;
377 spin_lock_irqsave(&priv->sta_lock, flags_spin);
380 else if (is_broadcast_ether_addr(addr))
381 index = priv->hw_params.bcast_sta_id;
383 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
384 if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
390 if (!priv->stations_39[i].used &&
391 index == IWL_INVALID_STATION)
395 /* These two conditions has the same outcome but keep them separate
396 since they have different meaning */
397 if (unlikely(index == IWL_INVALID_STATION)) {
398 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
402 if (priv->stations_39[index].used &&
403 !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
404 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
408 IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
409 station = &priv->stations_39[index];
411 priv->num_stations++;
413 /* Set up the REPLY_ADD_STA command to send to device */
414 memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
415 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
416 station->sta.mode = 0;
417 station->sta.sta.sta_id = index;
418 station->sta.station_flags = 0;
420 if (priv->band == IEEE80211_BAND_5GHZ)
421 rate = IWL_RATE_6M_PLCP;
423 rate = IWL_RATE_1M_PLCP;
425 /* Turn on both antennas for the station... */
426 station->sta.rate_n_flags =
427 iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
429 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
431 /* Add station to device's station table */
432 iwl3945_send_add_station(priv, &station->sta, flags);
437 int iwl3945_send_statistics_request(struct iwl_priv *priv)
441 struct iwl_host_cmd cmd = {
442 .id = REPLY_STATISTICS_CMD,
447 return iwl_send_cmd_sync(priv, &cmd);
451 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
452 * @band: 2.4 or 5 GHz band
453 * @channel: Any channel valid for the requested band
455 * In addition to setting the staging RXON, priv->band is also set.
457 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
458 * in the staging RXON flag structure based on the band
460 static int iwl3945_set_rxon_channel(struct iwl_priv *priv,
461 enum ieee80211_band band,
464 if (!iwl3945_get_channel_info(priv, band, channel)) {
465 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
470 if ((le16_to_cpu(priv->staging39_rxon.channel) == channel) &&
471 (priv->band == band))
474 priv->staging39_rxon.channel = cpu_to_le16(channel);
475 if (band == IEEE80211_BAND_5GHZ)
476 priv->staging39_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
478 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
482 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
488 * iwl3945_check_rxon_cmd - validate RXON structure is valid
490 * NOTE: This is really only useful during development and can eventually
491 * be #ifdef'd out once the driver is stable and folks aren't actively
494 static int iwl3945_check_rxon_cmd(struct iwl_priv *priv)
498 struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
500 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
501 error |= le32_to_cpu(rxon->flags &
502 (RXON_FLG_TGJ_NARROW_BAND_MSK |
503 RXON_FLG_RADAR_DETECT_MSK));
505 IWL_WARN(priv, "check 24G fields %d | %d\n",
508 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
509 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
511 IWL_WARN(priv, "check 52 fields %d | %d\n",
513 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
515 IWL_WARN(priv, "check 52 CCK %d | %d\n",
518 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
520 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
522 /* make sure basic rates 6Mbps and 1Mbps are supported */
523 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
524 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
526 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
528 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
530 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
532 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
533 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
535 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
538 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
539 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
541 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
544 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
545 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
547 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
550 if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
551 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
552 RXON_FLG_ANT_A_MSK)) == 0);
554 IWL_WARN(priv, "check antenna %d %d\n", counter++, error);
557 IWL_WARN(priv, "Tuning to channel %d\n",
558 le16_to_cpu(rxon->channel));
561 IWL_ERR(priv, "Not a valid rxon_assoc_cmd field values\n");
568 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
569 * @priv: staging_rxon is compared to active_rxon
571 * If the RXON structure is changing enough to require a new tune,
572 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
573 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
575 static int iwl3945_full_rxon_required(struct iwl_priv *priv)
578 /* These items are only settable from the full RXON command */
579 if (!(iwl3945_is_associated(priv)) ||
580 compare_ether_addr(priv->staging39_rxon.bssid_addr,
581 priv->active39_rxon.bssid_addr) ||
582 compare_ether_addr(priv->staging39_rxon.node_addr,
583 priv->active39_rxon.node_addr) ||
584 compare_ether_addr(priv->staging39_rxon.wlap_bssid_addr,
585 priv->active39_rxon.wlap_bssid_addr) ||
586 (priv->staging39_rxon.dev_type != priv->active39_rxon.dev_type) ||
587 (priv->staging39_rxon.channel != priv->active39_rxon.channel) ||
588 (priv->staging39_rxon.air_propagation !=
589 priv->active39_rxon.air_propagation) ||
590 (priv->staging39_rxon.assoc_id != priv->active39_rxon.assoc_id))
593 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
594 * be updated with the RXON_ASSOC command -- however only some
595 * flag transitions are allowed using RXON_ASSOC */
597 /* Check if we are not switching bands */
598 if ((priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
599 (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK))
602 /* Check if we are switching association toggle */
603 if ((priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
604 (priv->active39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
610 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
613 struct iwl_rx_packet *res = NULL;
614 struct iwl3945_rxon_assoc_cmd rxon_assoc;
615 struct iwl_host_cmd cmd = {
616 .id = REPLY_RXON_ASSOC,
617 .len = sizeof(rxon_assoc),
618 .meta.flags = CMD_WANT_SKB,
621 const struct iwl3945_rxon_cmd *rxon1 = &priv->staging39_rxon;
622 const struct iwl3945_rxon_cmd *rxon2 = &priv->active39_rxon;
624 if ((rxon1->flags == rxon2->flags) &&
625 (rxon1->filter_flags == rxon2->filter_flags) &&
626 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
627 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
628 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
632 rxon_assoc.flags = priv->staging39_rxon.flags;
633 rxon_assoc.filter_flags = priv->staging39_rxon.filter_flags;
634 rxon_assoc.ofdm_basic_rates = priv->staging39_rxon.ofdm_basic_rates;
635 rxon_assoc.cck_basic_rates = priv->staging39_rxon.cck_basic_rates;
636 rxon_assoc.reserved = 0;
638 rc = iwl_send_cmd_sync(priv, &cmd);
642 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
643 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
644 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
648 priv->alloc_rxb_skb--;
649 dev_kfree_skb_any(cmd.meta.u.skb);
655 * iwl3945_commit_rxon - commit staging_rxon to hardware
657 * The RXON command in staging_rxon is committed to the hardware and
658 * the active_rxon structure is updated with the new data. This
659 * function correctly transitions out of the RXON_ASSOC_MSK state if
660 * a HW tune is required based on the RXON structure changes.
662 static int iwl3945_commit_rxon(struct iwl_priv *priv)
664 /* cast away the const for active_rxon in this function */
665 struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active39_rxon;
668 if (!iwl_is_alive(priv))
671 /* always get timestamp with Rx frame */
672 priv->staging39_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
675 priv->staging39_rxon.flags &=
676 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
677 priv->staging39_rxon.flags |= iwl3945_get_antenna_flags(priv);
679 rc = iwl3945_check_rxon_cmd(priv);
681 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
685 /* If we don't need to send a full RXON, we can use
686 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
687 * and other flags for the current radio configuration. */
688 if (!iwl3945_full_rxon_required(priv)) {
689 rc = iwl3945_send_rxon_assoc(priv);
691 IWL_ERR(priv, "Error setting RXON_ASSOC "
692 "configuration (%d).\n", rc);
696 memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
701 /* If we are currently associated and the new config requires
702 * an RXON_ASSOC and the new config wants the associated mask enabled,
703 * we must clear the associated from the active configuration
704 * before we apply the new config */
705 if (iwl3945_is_associated(priv) &&
706 (priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
707 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
708 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
710 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
711 sizeof(struct iwl3945_rxon_cmd),
712 &priv->active39_rxon);
714 /* If the mask clearing failed then we set
715 * active_rxon back to what it was previously */
717 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
718 IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
719 "configuration (%d).\n", rc);
724 IWL_DEBUG_INFO("Sending RXON\n"
725 "* with%s RXON_FILTER_ASSOC_MSK\n"
728 ((priv->staging39_rxon.filter_flags &
729 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
730 le16_to_cpu(priv->staging39_rxon.channel),
731 priv->staging_rxon.bssid_addr);
733 /* Apply the new configuration */
734 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
735 sizeof(struct iwl3945_rxon_cmd), &priv->staging39_rxon);
737 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
741 memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
743 iwl3945_clear_stations_table(priv);
745 /* If we issue a new RXON command which required a tune then we must
746 * send a new TXPOWER command or we won't be able to Tx any frames */
747 rc = iwl3945_hw_reg_send_txpower(priv);
749 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
753 /* Add the broadcast address so we can send broadcast frames */
754 if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
755 IWL_INVALID_STATION) {
756 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
760 /* If we have set the ASSOC_MSK and we are in BSS mode then
761 * add the IWL_AP_ID to the station rate table */
762 if (iwl3945_is_associated(priv) &&
763 (priv->iw_mode == NL80211_IFTYPE_STATION))
764 if (iwl3945_add_station(priv, priv->active39_rxon.bssid_addr, 1, 0)
765 == IWL_INVALID_STATION) {
766 IWL_ERR(priv, "Error adding AP address for transmit\n");
770 /* Init the hardware's rate fallback order based on the band */
771 rc = iwl3945_init_hw_rate_table(priv);
773 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
780 static int iwl3945_send_bt_config(struct iwl_priv *priv)
782 struct iwl_bt_cmd bt_cmd = {
790 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
791 sizeof(bt_cmd), &bt_cmd);
794 static int iwl3945_send_scan_abort(struct iwl_priv *priv)
797 struct iwl_rx_packet *res;
798 struct iwl_host_cmd cmd = {
799 .id = REPLY_SCAN_ABORT_CMD,
800 .meta.flags = CMD_WANT_SKB,
803 /* If there isn't a scan actively going on in the hardware
804 * then we are in between scan bands and not actually
805 * actively scanning, so don't send the abort command */
806 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
807 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
811 rc = iwl_send_cmd_sync(priv, &cmd);
813 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
817 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
818 if (res->u.status != CAN_ABORT_STATUS) {
819 /* The scan abort will return 1 for success or
820 * 2 for "failure". A failure condition can be
821 * due to simply not being in an active scan which
822 * can occur if we send the scan abort before we
823 * the microcode has notified us that a scan is
825 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
826 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
827 clear_bit(STATUS_SCAN_HW, &priv->status);
830 dev_kfree_skb_any(cmd.meta.u.skb);
835 static int iwl3945_add_sta_sync_callback(struct iwl_priv *priv,
836 struct iwl_cmd *cmd, struct sk_buff *skb)
838 struct iwl_rx_packet *res = NULL;
841 IWL_ERR(priv, "Error: Response NULL in REPLY_ADD_STA.\n");
845 res = (struct iwl_rx_packet *)skb->data;
846 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
847 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
852 switch (res->u.add_sta.status) {
853 case ADD_STA_SUCCESS_MSK:
859 /* We didn't cache the SKB; let the caller free it */
863 int iwl3945_send_add_station(struct iwl_priv *priv,
864 struct iwl3945_addsta_cmd *sta, u8 flags)
866 struct iwl_rx_packet *res = NULL;
868 struct iwl_host_cmd cmd = {
870 .len = sizeof(struct iwl3945_addsta_cmd),
875 if (flags & CMD_ASYNC)
876 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
878 cmd.meta.flags |= CMD_WANT_SKB;
880 rc = iwl_send_cmd(priv, &cmd);
882 if (rc || (flags & CMD_ASYNC))
885 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
886 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
887 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
893 switch (res->u.add_sta.status) {
894 case ADD_STA_SUCCESS_MSK:
895 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
899 IWL_WARN(priv, "REPLY_ADD_STA failed\n");
904 priv->alloc_rxb_skb--;
905 dev_kfree_skb_any(cmd.meta.u.skb);
910 static int iwl3945_update_sta_key_info(struct iwl_priv *priv,
911 struct ieee80211_key_conf *keyconf,
915 __le16 key_flags = 0;
917 switch (keyconf->alg) {
919 key_flags |= STA_KEY_FLG_CCMP;
920 key_flags |= cpu_to_le16(
921 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
922 key_flags &= ~STA_KEY_FLG_INVALID;
929 spin_lock_irqsave(&priv->sta_lock, flags);
930 priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
931 priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
932 memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
935 memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
937 priv->stations_39[sta_id].sta.key.key_flags = key_flags;
938 priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
939 priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
941 spin_unlock_irqrestore(&priv->sta_lock, flags);
943 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
944 iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
948 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
952 spin_lock_irqsave(&priv->sta_lock, flags);
953 memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
954 memset(&priv->stations_39[sta_id].sta.key, 0,
955 sizeof(struct iwl4965_keyinfo));
956 priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
957 priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
958 priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
959 spin_unlock_irqrestore(&priv->sta_lock, flags);
961 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
962 iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
966 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
968 struct list_head *element;
970 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
973 while (!list_empty(&priv->free_frames)) {
974 element = priv->free_frames.next;
976 kfree(list_entry(element, struct iwl3945_frame, list));
977 priv->frames_count--;
980 if (priv->frames_count) {
981 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
983 priv->frames_count = 0;
987 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
989 struct iwl3945_frame *frame;
990 struct list_head *element;
991 if (list_empty(&priv->free_frames)) {
992 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
994 IWL_ERR(priv, "Could not allocate frame!\n");
998 priv->frames_count++;
1002 element = priv->free_frames.next;
1004 return list_entry(element, struct iwl3945_frame, list);
1007 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
1009 memset(frame, 0, sizeof(*frame));
1010 list_add(&frame->list, &priv->free_frames);
1013 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
1014 struct ieee80211_hdr *hdr,
1018 if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1019 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
1020 (priv->iw_mode != NL80211_IFTYPE_AP)))
1023 if (priv->ibss_beacon->len > left)
1026 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1028 return priv->ibss_beacon->len;
1031 static u8 iwl3945_rate_get_lowest_plcp(struct iwl_priv *priv)
1037 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1038 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
1040 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
1042 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1043 i = iwl3945_rates[i].next_ieee) {
1044 if (rate_mask & (1 << i))
1045 return iwl3945_rates[i].plcp;
1048 /* No valid rate was found. Assign the lowest one */
1049 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1050 return IWL_RATE_1M_PLCP;
1052 return IWL_RATE_6M_PLCP;
1055 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
1057 struct iwl3945_frame *frame;
1058 unsigned int frame_size;
1062 frame = iwl3945_get_free_frame(priv);
1065 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
1070 rate = iwl3945_rate_get_lowest_plcp(priv);
1072 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1074 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1077 iwl3945_free_frame(priv, frame);
1082 /******************************************************************************
1084 * EEPROM related functions
1086 ******************************************************************************/
1088 static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
1090 memcpy(mac, priv->eeprom39.mac_address, 6);
1094 * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1095 * embedded controller) as EEPROM reader; each read is a series of pulses
1096 * to/from the EEPROM chip, not a single event, so even reads could conflict
1097 * if they weren't arbitrated by some ownership mechanism. Here, the driver
1098 * simply claims ownership, which should be safe when this function is called
1099 * (i.e. before loading uCode!).
1101 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
1103 _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1108 * iwl3945_eeprom_init - read EEPROM contents
1110 * Load the EEPROM contents from adapter into priv->eeprom39
1112 * NOTE: This routine uses the non-debug IO access functions.
1114 int iwl3945_eeprom_init(struct iwl_priv *priv)
1116 u16 *e = (u16 *)&priv->eeprom39;
1117 u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1118 int sz = sizeof(priv->eeprom39);
1122 /* The EEPROM structure has several padding buffers within it
1123 * and when adding new EEPROM maps is subject to programmer errors
1124 * which may be very difficult to identify without explicitly
1125 * checking the resulting size of the eeprom map. */
1126 BUILD_BUG_ON(sizeof(priv->eeprom39) != IWL_EEPROM_IMAGE_SIZE);
1128 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1129 IWL_ERR(priv, "EEPROM not found, EEPROM_GP=0x%08x\n", gp);
1133 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1134 ret = iwl3945_eeprom_acquire_semaphore(priv);
1136 IWL_ERR(priv, "Failed to acquire EEPROM semaphore.\n");
1140 /* eeprom is an array of 16bit values */
1141 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1144 _iwl_write32(priv, CSR_EEPROM_REG,
1145 CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
1146 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1147 ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG,
1148 CSR_EEPROM_REG_READ_VALID_MSK,
1149 IWL_EEPROM_ACCESS_TIMEOUT);
1151 IWL_ERR(priv, "Time out reading EEPROM[%d]\n", addr);
1155 r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
1156 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1162 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
1164 if (priv->shared_virt)
1165 pci_free_consistent(priv->pci_dev,
1166 sizeof(struct iwl3945_shared),
1172 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1174 * return : set the bit for each supported rate insert in ie
1176 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1177 u16 basic_rate, int *left)
1179 u16 ret_rates = 0, bit;
1184 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1185 if (bit & supported_rate) {
1187 rates[*cnt] = iwl3945_rates[i].ieee |
1188 ((bit & basic_rate) ? 0x80 : 0x00);
1192 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1201 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1203 static u16 iwl3945_fill_probe_req(struct iwl_priv *priv,
1204 struct ieee80211_mgmt *frame,
1209 u16 active_rates, ret_rates, cck_rates;
1211 /* Make sure there is enough space for the probe request,
1212 * two mandatory IEs and the data */
1218 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1219 memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
1220 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1221 memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
1222 frame->seq_ctrl = 0;
1224 /* fill in our indirect SSID IE */
1231 pos = &(frame->u.probe_req.variable[0]);
1232 *pos++ = WLAN_EID_SSID;
1235 /* fill in supported rate */
1241 /* ... fill it in... */
1242 *pos++ = WLAN_EID_SUPP_RATES;
1245 priv->active_rate = priv->rates_mask;
1246 active_rates = priv->active_rate;
1247 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1249 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1250 ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1251 priv->active_rate_basic, &left);
1252 active_rates &= ~ret_rates;
1254 ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1255 priv->active_rate_basic, &left);
1256 active_rates &= ~ret_rates;
1260 if (active_rates == 0)
1263 /* fill in supported extended rate */
1268 /* ... fill it in... */
1269 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1271 iwl3945_supported_rate_to_ie(pos, active_rates,
1272 priv->active_rate_basic, &left);
1283 static int iwl3945_send_qos_params_command(struct iwl_priv *priv,
1284 struct iwl_qosparam_cmd *qos)
1287 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1288 sizeof(struct iwl_qosparam_cmd), qos);
1291 static void iwl3945_activate_qos(struct iwl_priv *priv, u8 force)
1293 unsigned long flags;
1295 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1298 spin_lock_irqsave(&priv->lock, flags);
1299 priv->qos_data.def_qos_parm.qos_flags = 0;
1301 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1302 !priv->qos_data.qos_cap.q_AP.txop_request)
1303 priv->qos_data.def_qos_parm.qos_flags |=
1304 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1306 if (priv->qos_data.qos_active)
1307 priv->qos_data.def_qos_parm.qos_flags |=
1308 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1310 spin_unlock_irqrestore(&priv->lock, flags);
1312 if (force || iwl3945_is_associated(priv)) {
1313 IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
1314 priv->qos_data.qos_active);
1316 iwl3945_send_qos_params_command(priv,
1317 &(priv->qos_data.def_qos_parm));
1322 * Power management (not Tx power!) functions
1324 #define MSEC_TO_USEC 1024
1327 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1328 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1329 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1330 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1331 __constant_cpu_to_le32(X1), \
1332 __constant_cpu_to_le32(X2), \
1333 __constant_cpu_to_le32(X3), \
1334 __constant_cpu_to_le32(X4)}
1336 /* default power management (not Tx power) table values */
1338 static struct iwl_power_vec_entry range_0[IWL39_POWER_AC] = {
1339 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1340 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1341 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1342 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1343 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1344 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1348 static struct iwl_power_vec_entry range_1[IWL39_POWER_AC] = {
1349 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1350 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1351 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1352 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1353 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1354 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1355 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1356 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1357 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1358 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1361 int iwl3945_power_init_handle(struct iwl_priv *priv)
1364 struct iwl3945_power_mgr *pow_data;
1365 int size = sizeof(struct iwl_power_vec_entry) * IWL39_POWER_AC;
1368 IWL_DEBUG_POWER("Initialize power \n");
1370 pow_data = &(priv->power_data_39);
1372 memset(pow_data, 0, sizeof(*pow_data));
1374 pow_data->active_index = IWL_POWER_RANGE_0;
1375 pow_data->dtim_val = 0xffff;
1377 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1378 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1380 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1384 struct iwl_powertable_cmd *cmd;
1386 IWL_DEBUG_POWER("adjust power command flags\n");
1388 for (i = 0; i < IWL39_POWER_AC; i++) {
1389 cmd = &pow_data->pwr_range_0[i].cmd;
1392 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1394 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1400 static int iwl3945_update_power_cmd(struct iwl_priv *priv,
1401 struct iwl_powertable_cmd *cmd, u32 mode)
1406 struct iwl_power_vec_entry *range;
1408 struct iwl3945_power_mgr *pow_data;
1410 if (mode > IWL_POWER_INDEX_5) {
1411 IWL_DEBUG_POWER("Error invalid power mode \n");
1414 pow_data = &(priv->power_data_39);
1416 if (pow_data->active_index == IWL_POWER_RANGE_0)
1417 range = &pow_data->pwr_range_0[0];
1419 range = &pow_data->pwr_range_1[1];
1421 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1423 #ifdef IWL_MAC80211_DISABLE
1424 if (priv->assoc_network != NULL) {
1425 unsigned long flags;
1427 period = priv->assoc_network->tim.tim_period;
1429 #endif /*IWL_MAC80211_DISABLE */
1430 skip = range[mode].no_dtim;
1439 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1441 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1442 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1443 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1446 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1447 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1448 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1451 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1452 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1453 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1454 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1455 le32_to_cpu(cmd->sleep_interval[0]),
1456 le32_to_cpu(cmd->sleep_interval[1]),
1457 le32_to_cpu(cmd->sleep_interval[2]),
1458 le32_to_cpu(cmd->sleep_interval[3]),
1459 le32_to_cpu(cmd->sleep_interval[4]));
1464 static int iwl3945_send_power_mode(struct iwl_priv *priv, u32 mode)
1466 u32 uninitialized_var(final_mode);
1468 struct iwl_powertable_cmd cmd;
1470 /* If on battery, set to 3,
1471 * if plugged into AC power, set to CAM ("continuously aware mode"),
1472 * else user level */
1474 case IWL39_POWER_BATTERY:
1475 final_mode = IWL_POWER_INDEX_3;
1477 case IWL39_POWER_AC:
1478 final_mode = IWL_POWER_MODE_CAM;
1485 iwl3945_update_power_cmd(priv, &cmd, final_mode);
1487 /* FIXME use get_hcmd_size 3945 command is 4 bytes shorter */
1488 rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD,
1489 sizeof(struct iwl3945_powertable_cmd), &cmd);
1491 if (final_mode == IWL_POWER_MODE_CAM)
1492 clear_bit(STATUS_POWER_PMI, &priv->status);
1494 set_bit(STATUS_POWER_PMI, &priv->status);
1499 #define MAX_UCODE_BEACON_INTERVAL 1024
1500 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1502 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
1505 u16 beacon_factor = 0;
1508 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1509 / MAX_UCODE_BEACON_INTERVAL;
1510 new_val = beacon_val / beacon_factor;
1512 return cpu_to_le16(new_val);
1515 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
1517 u64 interval_tm_unit;
1519 unsigned long flags;
1520 struct ieee80211_conf *conf = NULL;
1523 conf = ieee80211_get_hw_conf(priv->hw);
1525 spin_lock_irqsave(&priv->lock, flags);
1526 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
1527 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1529 tsf = priv->timestamp;
1531 beacon_int = priv->beacon_int;
1532 spin_unlock_irqrestore(&priv->lock, flags);
1534 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
1535 if (beacon_int == 0) {
1536 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1537 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1539 priv->rxon_timing.beacon_interval =
1540 cpu_to_le16(beacon_int);
1541 priv->rxon_timing.beacon_interval =
1542 iwl3945_adjust_beacon_interval(
1543 le16_to_cpu(priv->rxon_timing.beacon_interval));
1546 priv->rxon_timing.atim_window = 0;
1548 priv->rxon_timing.beacon_interval =
1549 iwl3945_adjust_beacon_interval(conf->beacon_int);
1550 /* TODO: we need to get atim_window from upper stack
1551 * for now we set to 0 */
1552 priv->rxon_timing.atim_window = 0;
1556 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1557 result = do_div(tsf, interval_tm_unit);
1558 priv->rxon_timing.beacon_init_val =
1559 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1562 ("beacon interval %d beacon timer %d beacon tim %d\n",
1563 le16_to_cpu(priv->rxon_timing.beacon_interval),
1564 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1565 le16_to_cpu(priv->rxon_timing.atim_window));
1568 static int iwl3945_scan_initiate(struct iwl_priv *priv)
1570 if (!iwl_is_ready_rf(priv)) {
1571 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1575 if (test_bit(STATUS_SCANNING, &priv->status)) {
1576 IWL_DEBUG_SCAN("Scan already in progress.\n");
1580 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1581 IWL_DEBUG_SCAN("Scan request while abort pending. "
1586 IWL_DEBUG_INFO("Starting scan...\n");
1587 if (priv->cfg->sku & IWL_SKU_G)
1588 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
1589 if (priv->cfg->sku & IWL_SKU_A)
1590 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
1591 set_bit(STATUS_SCANNING, &priv->status);
1592 priv->scan_start = jiffies;
1593 priv->scan_pass_start = priv->scan_start;
1595 queue_work(priv->workqueue, &priv->request_scan);
1600 static int iwl3945_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
1602 struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
1605 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
1607 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
1612 static void iwl3945_set_flags_for_phymode(struct iwl_priv *priv,
1613 enum ieee80211_band band)
1615 if (band == IEEE80211_BAND_5GHZ) {
1616 priv->staging39_rxon.flags &=
1617 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1618 | RXON_FLG_CCK_MSK);
1619 priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1621 /* Copied from iwl3945_bg_post_associate() */
1622 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1623 priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1625 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1627 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1628 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1630 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1631 priv->staging39_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1632 priv->staging39_rxon.flags &= ~RXON_FLG_CCK_MSK;
1637 * initialize rxon structure with default values from eeprom
1639 static void iwl3945_connection_init_rx_config(struct iwl_priv *priv,
1642 const struct iwl_channel_info *ch_info;
1644 memset(&priv->staging39_rxon, 0, sizeof(priv->staging39_rxon));
1647 case NL80211_IFTYPE_AP:
1648 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_AP;
1651 case NL80211_IFTYPE_STATION:
1652 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_ESS;
1653 priv->staging39_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1656 case NL80211_IFTYPE_ADHOC:
1657 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1658 priv->staging39_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1659 priv->staging39_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1660 RXON_FILTER_ACCEPT_GRP_MSK;
1663 case NL80211_IFTYPE_MONITOR:
1664 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1665 priv->staging39_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1666 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1669 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1674 /* TODO: Figure out when short_preamble would be set and cache from
1676 if (!hw_to_local(priv->hw)->short_preamble)
1677 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1679 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1682 ch_info = iwl3945_get_channel_info(priv, priv->band,
1683 le16_to_cpu(priv->active39_rxon.channel));
1686 ch_info = &priv->channel_info[0];
1689 * in some case A channels are all non IBSS
1690 * in this case force B/G channel
1692 if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
1693 ch_info = &priv->channel_info[0];
1695 priv->staging39_rxon.channel = cpu_to_le16(ch_info->channel);
1696 if (is_channel_a_band(ch_info))
1697 priv->band = IEEE80211_BAND_5GHZ;
1699 priv->band = IEEE80211_BAND_2GHZ;
1701 iwl3945_set_flags_for_phymode(priv, priv->band);
1703 priv->staging39_rxon.ofdm_basic_rates =
1704 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1705 priv->staging39_rxon.cck_basic_rates =
1706 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1709 static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
1711 if (mode == NL80211_IFTYPE_ADHOC) {
1712 const struct iwl_channel_info *ch_info;
1714 ch_info = iwl3945_get_channel_info(priv,
1716 le16_to_cpu(priv->staging39_rxon.channel));
1718 if (!ch_info || !is_channel_ibss(ch_info)) {
1719 IWL_ERR(priv, "channel %d not IBSS channel\n",
1720 le16_to_cpu(priv->staging39_rxon.channel));
1725 iwl3945_connection_init_rx_config(priv, mode);
1726 memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1728 iwl3945_clear_stations_table(priv);
1730 /* don't commit rxon if rf-kill is on*/
1731 if (!iwl_is_ready_rf(priv))
1734 cancel_delayed_work(&priv->scan_check);
1735 if (iwl_scan_cancel_timeout(priv, 100)) {
1736 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
1737 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1741 iwl3945_commit_rxon(priv);
1746 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
1747 struct ieee80211_tx_info *info,
1748 struct iwl_cmd *cmd,
1749 struct sk_buff *skb_frag,
1752 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
1753 struct iwl3945_hw_key *keyinfo =
1754 &priv->stations_39[info->control.hw_key->hw_key_idx].keyinfo;
1756 switch (keyinfo->alg) {
1758 tx->sec_ctl = TX_CMD_SEC_CCM;
1759 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
1760 IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
1765 tx->sec_ctl = TX_CMD_SEC_TKIP;
1768 memcpy(tx->tkip_mic.byte, skb_frag->tail - 8,
1771 memset(tx->tkip_mic.byte, 0, 8);
1776 tx->sec_ctl = TX_CMD_SEC_WEP |
1777 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
1779 if (keyinfo->keylen == 13)
1780 tx->sec_ctl |= TX_CMD_SEC_KEY128;
1782 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
1784 IWL_DEBUG_TX("Configuring packet for WEP encryption "
1785 "with key %d\n", info->control.hw_key->hw_key_idx);
1789 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
1795 * handle build REPLY_TX command notification.
1797 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
1798 struct iwl_cmd *cmd,
1799 struct ieee80211_tx_info *info,
1800 struct ieee80211_hdr *hdr, u8 std_id)
1802 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
1803 __le32 tx_flags = tx->tx_flags;
1804 __le16 fc = hdr->frame_control;
1805 u8 rc_flags = info->control.rates[0].flags;
1807 tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
1808 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
1809 tx_flags |= TX_CMD_FLG_ACK_MSK;
1810 if (ieee80211_is_mgmt(fc))
1811 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1812 if (ieee80211_is_probe_resp(fc) &&
1813 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
1814 tx_flags |= TX_CMD_FLG_TSF_MSK;
1816 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
1817 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1820 tx->sta_id = std_id;
1821 if (ieee80211_has_morefrags(fc))
1822 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
1824 if (ieee80211_is_data_qos(fc)) {
1825 u8 *qc = ieee80211_get_qos_ctl(hdr);
1826 tx->tid_tspec = qc[0] & 0xf;
1827 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
1829 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1832 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
1833 tx_flags |= TX_CMD_FLG_RTS_MSK;
1834 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
1835 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
1836 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
1837 tx_flags |= TX_CMD_FLG_CTS_MSK;
1840 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
1841 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
1843 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
1844 if (ieee80211_is_mgmt(fc)) {
1845 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
1846 tx->timeout.pm_frame_timeout = cpu_to_le16(3);
1848 tx->timeout.pm_frame_timeout = cpu_to_le16(2);
1850 tx->timeout.pm_frame_timeout = 0;
1851 #ifdef CONFIG_IWL3945_LEDS
1852 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
1856 tx->driver_txop = 0;
1857 tx->tx_flags = tx_flags;
1858 tx->next_frame_len = 0;
1862 * iwl3945_get_sta_id - Find station's index within station table
1864 static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1867 u16 fc = le16_to_cpu(hdr->frame_control);
1869 /* If this frame is broadcast or management, use broadcast station id */
1870 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1871 is_multicast_ether_addr(hdr->addr1))
1872 return priv->hw_params.bcast_sta_id;
1874 switch (priv->iw_mode) {
1876 /* If we are a client station in a BSS network, use the special
1877 * AP station entry (that's the only station we communicate with) */
1878 case NL80211_IFTYPE_STATION:
1881 /* If we are an AP, then find the station, or use BCAST */
1882 case NL80211_IFTYPE_AP:
1883 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
1884 if (sta_id != IWL_INVALID_STATION)
1886 return priv->hw_params.bcast_sta_id;
1888 /* If this frame is going out to an IBSS network, find the station,
1889 * or create a new station table entry */
1890 case NL80211_IFTYPE_ADHOC: {
1891 /* Create new station table entry */
1892 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
1893 if (sta_id != IWL_INVALID_STATION)
1896 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
1898 if (sta_id != IWL_INVALID_STATION)
1901 IWL_DEBUG_DROP("Station %pM not in station map. "
1902 "Defaulting to broadcast...\n",
1904 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1905 return priv->hw_params.bcast_sta_id;
1907 /* If we are in monitor mode, use BCAST. This is required for
1908 * packet injection. */
1909 case NL80211_IFTYPE_MONITOR:
1910 return priv->hw_params.bcast_sta_id;
1913 IWL_WARN(priv, "Unknown mode of operation: %d\n",
1915 return priv->hw_params.bcast_sta_id;
1920 * start REPLY_TX command process
1922 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
1924 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1925 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1926 struct iwl3945_tx_cmd *tx;
1927 struct iwl_tx_queue *txq = NULL;
1928 struct iwl_queue *q = NULL;
1929 struct iwl_cmd *out_cmd = NULL;
1930 dma_addr_t phys_addr;
1931 dma_addr_t txcmd_phys;
1932 int txq_id = skb_get_queue_mapping(skb);
1933 u16 len, idx, len_org, hdr_len;
1940 u8 wait_write_ptr = 0;
1942 unsigned long flags;
1945 spin_lock_irqsave(&priv->lock, flags);
1946 if (iwl_is_rfkill(priv)) {
1947 IWL_DEBUG_DROP("Dropping - RF KILL\n");
1951 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
1952 IWL_ERR(priv, "ERROR: No TX rate available.\n");
1956 unicast = !is_multicast_ether_addr(hdr->addr1);
1959 fc = hdr->frame_control;
1961 #ifdef CONFIG_IWL3945_DEBUG
1962 if (ieee80211_is_auth(fc))
1963 IWL_DEBUG_TX("Sending AUTH frame\n");
1964 else if (ieee80211_is_assoc_req(fc))
1965 IWL_DEBUG_TX("Sending ASSOC frame\n");
1966 else if (ieee80211_is_reassoc_req(fc))
1967 IWL_DEBUG_TX("Sending REASSOC frame\n");
1970 /* drop all data frame if we are not associated */
1971 if (ieee80211_is_data(fc) &&
1972 (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
1973 (!iwl3945_is_associated(priv) ||
1974 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
1975 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
1979 spin_unlock_irqrestore(&priv->lock, flags);
1981 hdr_len = ieee80211_hdrlen(fc);
1983 /* Find (or create) index into station table for destination station */
1984 sta_id = iwl3945_get_sta_id(priv, hdr);
1985 if (sta_id == IWL_INVALID_STATION) {
1986 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
1991 IWL_DEBUG_RATE("station Id %d\n", sta_id);
1993 if (ieee80211_is_data_qos(fc)) {
1994 qc = ieee80211_get_qos_ctl(hdr);
1995 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
1996 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
1998 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2000 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2004 /* Descriptor for chosen Tx queue */
2005 txq = &priv->txq[txq_id];
2008 spin_lock_irqsave(&priv->lock, flags);
2010 idx = get_cmd_index(q, q->write_ptr, 0);
2012 /* Set up driver data for this TFD */
2013 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
2014 txq->txb[q->write_ptr].skb[0] = skb;
2016 /* Init first empty entry in queue's array of Tx/cmd buffers */
2017 out_cmd = txq->cmd[idx];
2018 tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
2019 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2020 memset(tx, 0, sizeof(*tx));
2023 * Set up the Tx-command (not MAC!) header.
2024 * Store the chosen Tx queue and TFD index within the sequence field;
2025 * after Tx, uCode's Tx response will return this value so driver can
2026 * locate the frame within the tx queue and do post-tx processing.
2028 out_cmd->hdr.cmd = REPLY_TX;
2029 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2030 INDEX_TO_SEQ(q->write_ptr)));
2032 /* Copy MAC header from skb into command buffer */
2033 memcpy(tx->hdr, hdr, hdr_len);
2036 * Use the first empty entry in this queue's command buffer array
2037 * to contain the Tx command and MAC header concatenated together
2038 * (payload data will be in another buffer).
2039 * Size of this varies, due to varying MAC header length.
2040 * If end is not dword aligned, we'll have 2 extra bytes at the end
2041 * of the MAC header (device reads on dword boundaries).
2042 * We'll tell device about this padding later.
2044 len = sizeof(struct iwl3945_tx_cmd) +
2045 sizeof(struct iwl_cmd_header) + hdr_len;
2048 len = (len + 3) & ~3;
2055 /* Physical address of this Tx command's header (not MAC header!),
2056 * within command buffer array. */
2057 txcmd_phys = pci_map_single(priv->pci_dev,
2058 out_cmd, sizeof(struct iwl_cmd),
2060 pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
2061 pci_unmap_len_set(&out_cmd->meta, len, sizeof(struct iwl_cmd));
2062 /* Add buffer containing Tx command and MAC(!) header to TFD's
2064 txcmd_phys += offsetof(struct iwl_cmd, hdr);
2066 /* Add buffer containing Tx command and MAC(!) header to TFD's
2068 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
2069 txcmd_phys, len, 1, 0);
2071 if (info->control.hw_key)
2072 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
2074 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2075 * if any (802.11 null frames have no payload). */
2076 len = skb->len - hdr_len;
2078 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2079 len, PCI_DMA_TODEVICE);
2080 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
2085 /* Total # bytes to be transmitted */
2086 len = (u16)skb->len;
2087 tx->len = cpu_to_le16(len);
2089 /* TODO need this for burst mode later on */
2090 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
2092 /* set is_hcca to 0; it probably will never be implemented */
2093 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
2095 tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2096 tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2098 if (!ieee80211_has_morefrags(hdr->frame_control)) {
2099 txq->need_update = 1;
2101 priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
2104 txq->need_update = 0;
2107 iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
2109 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
2110 ieee80211_hdrlen(fc));
2112 /* Tell device the write index *just past* this latest filled TFD */
2113 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2114 rc = iwl_txq_update_write_ptr(priv, txq);
2115 spin_unlock_irqrestore(&priv->lock, flags);
2120 if ((iwl_queue_space(q) < q->high_mark)
2121 && priv->mac80211_registered) {
2122 if (wait_write_ptr) {
2123 spin_lock_irqsave(&priv->lock, flags);
2124 txq->need_update = 1;
2125 iwl_txq_update_write_ptr(priv, txq);
2126 spin_unlock_irqrestore(&priv->lock, flags);
2129 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
2135 spin_unlock_irqrestore(&priv->lock, flags);
2140 static void iwl3945_set_rate(struct iwl_priv *priv)
2142 const struct ieee80211_supported_band *sband = NULL;
2143 struct ieee80211_rate *rate;
2146 sband = iwl_get_hw_mode(priv, priv->band);
2148 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
2152 priv->active_rate = 0;
2153 priv->active_rate_basic = 0;
2155 IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2156 sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2158 for (i = 0; i < sband->n_bitrates; i++) {
2159 rate = &sband->bitrates[i];
2160 if ((rate->hw_value < IWL_RATE_COUNT) &&
2161 !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2162 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2163 rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2164 priv->active_rate |= (1 << rate->hw_value);
2168 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2169 priv->active_rate, priv->active_rate_basic);
2172 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2173 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2176 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2177 priv->staging39_rxon.cck_basic_rates =
2178 ((priv->active_rate_basic &
2179 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2181 priv->staging39_rxon.cck_basic_rates =
2182 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2184 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2185 priv->staging39_rxon.ofdm_basic_rates =
2186 ((priv->active_rate_basic &
2187 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2188 IWL_FIRST_OFDM_RATE) & 0xFF;
2190 priv->staging39_rxon.ofdm_basic_rates =
2191 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2194 static void iwl3945_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2196 unsigned long flags;
2198 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2201 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2202 disable_radio ? "OFF" : "ON");
2204 if (disable_radio) {
2205 iwl_scan_cancel(priv);
2206 /* FIXME: This is a workaround for AP */
2207 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2208 spin_lock_irqsave(&priv->lock, flags);
2209 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2210 CSR_UCODE_SW_BIT_RFKILL);
2211 spin_unlock_irqrestore(&priv->lock, flags);
2212 iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2213 set_bit(STATUS_RF_KILL_SW, &priv->status);
2218 spin_lock_irqsave(&priv->lock, flags);
2219 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2221 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2222 spin_unlock_irqrestore(&priv->lock, flags);
2227 spin_lock_irqsave(&priv->lock, flags);
2228 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2229 if (!iwl_grab_nic_access(priv))
2230 iwl_release_nic_access(priv);
2231 spin_unlock_irqrestore(&priv->lock, flags);
2233 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2234 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2235 "disabled by HW switch\n");
2240 queue_work(priv->workqueue, &priv->restart);
2244 void iwl3945_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2245 u32 decrypt_res, struct ieee80211_rx_status *stats)
2248 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2250 if (priv->active39_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2253 if (!(fc & IEEE80211_FCTL_PROTECTED))
2256 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2257 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2258 case RX_RES_STATUS_SEC_TYPE_TKIP:
2259 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2260 RX_RES_STATUS_BAD_ICV_MIC)
2261 stats->flag |= RX_FLAG_MMIC_ERROR;
2262 case RX_RES_STATUS_SEC_TYPE_WEP:
2263 case RX_RES_STATUS_SEC_TYPE_CCMP:
2264 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2265 RX_RES_STATUS_DECRYPT_OK) {
2266 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2267 stats->flag |= RX_FLAG_DECRYPTED;
2276 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2278 #include "iwl-spectrum.h"
2280 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
2281 #define BEACON_TIME_MASK_HIGH 0xFF000000
2282 #define TIME_UNIT 1024
2285 * extended beacon time format
2286 * time in usec will be changed into a 32-bit value in 8:24 format
2287 * the high 1 byte is the beacon counts
2288 * the lower 3 bytes is the time in usec within one beacon interval
2291 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
2295 u32 interval = beacon_interval * 1024;
2297 if (!interval || !usec)
2300 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2301 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2303 return (quot << 24) + rem;
2306 /* base is usually what we get from ucode with each received frame,
2307 * the same as HW timer counter counting down
2310 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2312 u32 base_low = base & BEACON_TIME_MASK_LOW;
2313 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2314 u32 interval = beacon_interval * TIME_UNIT;
2315 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2316 (addon & BEACON_TIME_MASK_HIGH);
2318 if (base_low > addon_low)
2319 res += base_low - addon_low;
2320 else if (base_low < addon_low) {
2321 res += interval + base_low - addon_low;
2326 return cpu_to_le32(res);
2329 static int iwl3945_get_measurement(struct iwl_priv *priv,
2330 struct ieee80211_measurement_params *params,
2333 struct iwl_spectrum_cmd spectrum;
2334 struct iwl_rx_packet *res;
2335 struct iwl_host_cmd cmd = {
2336 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2337 .data = (void *)&spectrum,
2338 .meta.flags = CMD_WANT_SKB,
2340 u32 add_time = le64_to_cpu(params->start_time);
2342 int spectrum_resp_status;
2343 int duration = le16_to_cpu(params->duration);
2345 if (iwl3945_is_associated(priv))
2347 iwl3945_usecs_to_beacons(
2348 le64_to_cpu(params->start_time) - priv->last_tsf,
2349 le16_to_cpu(priv->rxon_timing.beacon_interval));
2351 memset(&spectrum, 0, sizeof(spectrum));
2353 spectrum.channel_count = cpu_to_le16(1);
2355 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2356 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2357 cmd.len = sizeof(spectrum);
2358 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2360 if (iwl3945_is_associated(priv))
2361 spectrum.start_time =
2362 iwl3945_add_beacon_time(priv->last_beacon_time,
2364 le16_to_cpu(priv->rxon_timing.beacon_interval));
2366 spectrum.start_time = 0;
2368 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2369 spectrum.channels[0].channel = params->channel;
2370 spectrum.channels[0].type = type;
2371 if (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK)
2372 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2373 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2375 rc = iwl_send_cmd_sync(priv, &cmd);
2379 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
2380 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2381 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
2385 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2386 switch (spectrum_resp_status) {
2387 case 0: /* Command will be handled */
2388 if (res->u.spectrum.id != 0xff) {
2389 IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
2390 res->u.spectrum.id);
2391 priv->measurement_status &= ~MEASUREMENT_READY;
2393 priv->measurement_status |= MEASUREMENT_ACTIVE;
2397 case 1: /* Command will not be handled */
2402 dev_kfree_skb_any(cmd.meta.u.skb);
2408 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
2409 struct iwl_rx_mem_buffer *rxb)
2411 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2412 struct iwl_alive_resp *palive;
2413 struct delayed_work *pwork;
2415 palive = &pkt->u.alive_frame;
2417 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2419 palive->is_valid, palive->ver_type,
2420 palive->ver_subtype);
2422 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2423 IWL_DEBUG_INFO("Initialization Alive received.\n");
2424 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
2425 sizeof(struct iwl_alive_resp));
2426 pwork = &priv->init_alive_start;
2428 IWL_DEBUG_INFO("Runtime Alive received.\n");
2429 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2430 sizeof(struct iwl_alive_resp));
2431 pwork = &priv->alive_start;
2432 iwl3945_disable_events(priv);
2435 /* We delay the ALIVE response by 5ms to
2436 * give the HW RF Kill time to activate... */
2437 if (palive->is_valid == UCODE_VALID_OK)
2438 queue_delayed_work(priv->workqueue, pwork,
2439 msecs_to_jiffies(5));
2441 IWL_WARN(priv, "uCode did not respond OK.\n");
2444 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
2445 struct iwl_rx_mem_buffer *rxb)
2447 #ifdef CONFIG_IWLWIFI_DEBUG
2448 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2451 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2455 static void iwl3945_rx_reply_error(struct iwl_priv *priv,
2456 struct iwl_rx_mem_buffer *rxb)
2458 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2460 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2461 "seq 0x%04X ser 0x%08X\n",
2462 le32_to_cpu(pkt->u.err_resp.error_type),
2463 get_cmd_string(pkt->u.err_resp.cmd_id),
2464 pkt->u.err_resp.cmd_id,
2465 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2466 le32_to_cpu(pkt->u.err_resp.error_info));
2469 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2471 static void iwl3945_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
2473 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2474 struct iwl3945_rxon_cmd *rxon = (void *)&priv->active39_rxon;
2475 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
2476 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2477 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2478 rxon->channel = csa->channel;
2479 priv->staging39_rxon.channel = csa->channel;
2482 static void iwl3945_rx_spectrum_measure_notif(struct iwl_priv *priv,
2483 struct iwl_rx_mem_buffer *rxb)
2485 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2486 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2487 struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
2489 if (!report->state) {
2490 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
2491 "Spectrum Measure Notification: Start\n");
2495 memcpy(&priv->measure_report, report, sizeof(*report));
2496 priv->measurement_status |= MEASUREMENT_READY;
2500 static void iwl3945_rx_pm_sleep_notif(struct iwl_priv *priv,
2501 struct iwl_rx_mem_buffer *rxb)
2503 #ifdef CONFIG_IWL3945_DEBUG
2504 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2505 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2506 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2507 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2511 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2512 struct iwl_rx_mem_buffer *rxb)
2514 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2515 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2516 "notification for %s:\n",
2517 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2518 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
2519 le32_to_cpu(pkt->len));
2522 static void iwl3945_bg_beacon_update(struct work_struct *work)
2524 struct iwl_priv *priv =
2525 container_of(work, struct iwl_priv, beacon_update);
2526 struct sk_buff *beacon;
2528 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2529 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
2532 IWL_ERR(priv, "update beacon failed\n");
2536 mutex_lock(&priv->mutex);
2537 /* new beacon skb is allocated every time; dispose previous.*/
2538 if (priv->ibss_beacon)
2539 dev_kfree_skb(priv->ibss_beacon);
2541 priv->ibss_beacon = beacon;
2542 mutex_unlock(&priv->mutex);
2544 iwl3945_send_beacon_cmd(priv);
2547 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
2548 struct iwl_rx_mem_buffer *rxb)
2550 #ifdef CONFIG_IWL3945_DEBUG
2551 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2552 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
2553 u8 rate = beacon->beacon_notify_hdr.rate;
2555 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2556 "tsf %d %d rate %d\n",
2557 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2558 beacon->beacon_notify_hdr.failure_frame,
2559 le32_to_cpu(beacon->ibss_mgr_status),
2560 le32_to_cpu(beacon->high_tsf),
2561 le32_to_cpu(beacon->low_tsf), rate);
2564 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2565 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2566 queue_work(priv->workqueue, &priv->beacon_update);
2569 /* Service response to REPLY_SCAN_CMD (0x80) */
2570 static void iwl3945_rx_reply_scan(struct iwl_priv *priv,
2571 struct iwl_rx_mem_buffer *rxb)
2573 #ifdef CONFIG_IWL3945_DEBUG
2574 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2575 struct iwl_scanreq_notification *notif =
2576 (struct iwl_scanreq_notification *)pkt->u.raw;
2578 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2582 /* Service SCAN_START_NOTIFICATION (0x82) */
2583 static void iwl3945_rx_scan_start_notif(struct iwl_priv *priv,
2584 struct iwl_rx_mem_buffer *rxb)
2586 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2587 struct iwl_scanstart_notification *notif =
2588 (struct iwl_scanstart_notification *)pkt->u.raw;
2589 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2590 IWL_DEBUG_SCAN("Scan start: "
2592 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2594 notif->band ? "bg" : "a",
2596 notif->tsf_low, notif->status, notif->beacon_timer);
2599 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2600 static void iwl3945_rx_scan_results_notif(struct iwl_priv *priv,
2601 struct iwl_rx_mem_buffer *rxb)
2603 #ifdef CONFIG_IWLWIFI_DEBUG
2604 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2605 struct iwl_scanresults_notification *notif =
2606 (struct iwl_scanresults_notification *)pkt->u.raw;
2609 IWL_DEBUG_SCAN("Scan ch.res: "
2611 "(TSF: 0x%08X:%08X) - %d "
2612 "elapsed=%lu usec (%dms since last)\n",
2614 notif->band ? "bg" : "a",
2615 le32_to_cpu(notif->tsf_high),
2616 le32_to_cpu(notif->tsf_low),
2617 le32_to_cpu(notif->statistics[0]),
2618 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2619 jiffies_to_msecs(elapsed_jiffies
2620 (priv->last_scan_jiffies, jiffies)));
2622 priv->last_scan_jiffies = jiffies;
2623 priv->next_scan_jiffies = 0;
2626 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2627 static void iwl3945_rx_scan_complete_notif(struct iwl_priv *priv,
2628 struct iwl_rx_mem_buffer *rxb)
2630 #ifdef CONFIG_IWLWIFI_DEBUG
2631 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2632 struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2635 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2636 scan_notif->scanned_channels,
2637 scan_notif->tsf_low,
2638 scan_notif->tsf_high, scan_notif->status);
2640 /* The HW is no longer scanning */
2641 clear_bit(STATUS_SCAN_HW, &priv->status);
2643 /* The scan completion notification came in, so kill that timer... */
2644 cancel_delayed_work(&priv->scan_check);
2646 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2647 (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
2649 jiffies_to_msecs(elapsed_jiffies
2650 (priv->scan_pass_start, jiffies)));
2652 /* Remove this scanned band from the list of pending
2653 * bands to scan, band G precedes A in order of scanning
2654 * as seen in iwl3945_bg_request_scan */
2655 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
2656 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
2657 else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ))
2658 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
2660 /* If a request to abort was given, or the scan did not succeed
2661 * then we reset the scan state machine and terminate,
2662 * re-queuing another scan if one has been requested */
2663 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2664 IWL_DEBUG_INFO("Aborted scan completed.\n");
2665 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2667 /* If there are more bands on this scan pass reschedule */
2668 if (priv->scan_bands > 0)
2672 priv->last_scan_jiffies = jiffies;
2673 priv->next_scan_jiffies = 0;
2674 IWL_DEBUG_INFO("Setting scan to off\n");
2676 clear_bit(STATUS_SCANNING, &priv->status);
2678 IWL_DEBUG_INFO("Scan took %dms\n",
2679 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2681 queue_work(priv->workqueue, &priv->scan_completed);
2686 priv->scan_pass_start = jiffies;
2687 queue_work(priv->workqueue, &priv->request_scan);
2690 /* Handle notification from uCode that card's power state is changing
2691 * due to software, hardware, or critical temperature RFKILL */
2692 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
2693 struct iwl_rx_mem_buffer *rxb)
2695 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2696 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2697 unsigned long status = priv->status;
2699 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2700 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2701 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2703 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2704 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2706 if (flags & HW_CARD_DISABLED)
2707 set_bit(STATUS_RF_KILL_HW, &priv->status);
2709 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2712 if (flags & SW_CARD_DISABLED)
2713 set_bit(STATUS_RF_KILL_SW, &priv->status);
2715 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2717 iwl_scan_cancel(priv);
2719 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2720 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2721 (test_bit(STATUS_RF_KILL_SW, &status) !=
2722 test_bit(STATUS_RF_KILL_SW, &priv->status)))
2723 queue_work(priv->workqueue, &priv->rf_kill);
2725 wake_up_interruptible(&priv->wait_command_queue);
2729 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
2731 * Setup the RX handlers for each of the reply types sent from the uCode
2734 * This function chains into the hardware specific files for them to setup
2735 * any hardware specific handlers as well.
2737 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
2739 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
2740 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
2741 priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
2742 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
2743 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
2744 iwl3945_rx_spectrum_measure_notif;
2745 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
2746 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
2747 iwl3945_rx_pm_debug_statistics_notif;
2748 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
2751 * The same handler is used for both the REPLY to a discrete
2752 * statistics request from the host as well as for the periodic
2753 * statistics notifications (after received beacons) from the uCode.
2755 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
2756 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
2758 priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
2759 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
2760 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
2761 iwl3945_rx_scan_results_notif;
2762 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
2763 iwl3945_rx_scan_complete_notif;
2764 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
2766 /* Set up hardware specific Rx handlers */
2767 iwl3945_hw_rx_handler_setup(priv);
2771 * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
2772 * When FW advances 'R' index, all entries between old and new 'R' index
2773 * need to be reclaimed.
2775 static void iwl3945_cmd_queue_reclaim(struct iwl_priv *priv,
2776 int txq_id, int index)
2778 struct iwl_tx_queue *txq = &priv->txq[txq_id];
2779 struct iwl_queue *q = &txq->q;
2782 if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
2783 IWL_ERR(priv, "Read index for DMA queue txq id (%d), index %d, "
2784 "is out of range [0-%d] %d %d.\n", txq_id,
2785 index, q->n_bd, q->write_ptr, q->read_ptr);
2789 for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
2790 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2792 IWL_ERR(priv, "HCMD skipped: index (%d) %d %d\n", index,
2793 q->write_ptr, q->read_ptr);
2794 queue_work(priv->workqueue, &priv->restart);
2803 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
2804 * @rxb: Rx buffer to reclaim
2806 * If an Rx buffer has an async callback associated with it the callback
2807 * will be executed. The attached skb (if present) will only be freed
2808 * if the callback returns 1
2810 static void iwl3945_tx_cmd_complete(struct iwl_priv *priv,
2811 struct iwl_rx_mem_buffer *rxb)
2813 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2814 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2815 int txq_id = SEQ_TO_QUEUE(sequence);
2816 int index = SEQ_TO_INDEX(sequence);
2817 int huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
2819 struct iwl_cmd *cmd;
2821 if (WARN(txq_id != IWL_CMD_QUEUE_NUM,
2822 "wrong command queue %d, sequence 0x%X readp=%d writep=%d\n",
2824 priv->txq[IWL_CMD_QUEUE_NUM].q.read_ptr,
2825 priv->txq[IWL_CMD_QUEUE_NUM].q.write_ptr)) {
2826 iwl_print_hex_dump(priv, IWL_DL_INFO , rxb, 32);
2830 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
2831 cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
2833 /* Input error checking is done when commands are added to queue. */
2834 if (cmd->meta.flags & CMD_WANT_SKB) {
2835 cmd->meta.source->u.skb = rxb->skb;
2837 } else if (cmd->meta.u.callback &&
2838 !cmd->meta.u.callback(priv, cmd, rxb->skb))
2841 iwl3945_cmd_queue_reclaim(priv, txq_id, index);
2843 if (!(cmd->meta.flags & CMD_ASYNC)) {
2844 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2845 wake_up_interruptible(&priv->wait_command_queue);
2849 /************************** RX-FUNCTIONS ****************************/
2851 * Rx theory of operation
2853 * The host allocates 32 DMA target addresses and passes the host address
2854 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
2858 * The host/firmware share two index registers for managing the Rx buffers.
2860 * The READ index maps to the first position that the firmware may be writing
2861 * to -- the driver can read up to (but not including) this position and get
2863 * The READ index is managed by the firmware once the card is enabled.
2865 * The WRITE index maps to the last position the driver has read from -- the
2866 * position preceding WRITE is the last slot the firmware can place a packet.
2868 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
2871 * During initialization, the host sets up the READ queue position to the first
2872 * INDEX position, and WRITE to the last (READ - 1 wrapped)
2874 * When the firmware places a packet in a buffer, it will advance the READ index
2875 * and fire the RX interrupt. The driver can then query the READ index and
2876 * process as many packets as possible, moving the WRITE index forward as it
2877 * resets the Rx queue buffers with new memory.
2879 * The management in the driver is as follows:
2880 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
2881 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
2882 * to replenish the iwl->rxq->rx_free.
2883 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
2884 * iwl->rxq is replenished and the READ INDEX is updated (updating the
2885 * 'processed' and 'read' driver indexes as well)
2886 * + A received packet is processed and handed to the kernel network stack,
2887 * detached from the iwl->rxq. The driver 'processed' index is updated.
2888 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
2889 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
2890 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
2891 * were enough free buffers and RX_STALLED is set it is cleared.
2896 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
2897 * iwl3945_rx_queue_restock
2898 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
2899 * queue, updates firmware pointers, and updates
2900 * the WRITE index. If insufficient rx_free buffers
2901 * are available, schedules iwl3945_rx_replenish
2903 * -- enable interrupts --
2904 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
2905 * READ INDEX, detaching the SKB from the pool.
2906 * Moves the packet buffer from queue to rx_used.
2907 * Calls iwl3945_rx_queue_restock to refill any empty
2914 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
2916 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
2917 dma_addr_t dma_addr)
2919 return cpu_to_le32((u32)dma_addr);
2923 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
2925 * If there are slots in the RX queue that need to be restocked,
2926 * and we have free pre-allocated buffers, fill the ranks as much
2927 * as we can, pulling from rx_free.
2929 * This moves the 'write' index forward to catch up with 'processed', and
2930 * also updates the memory address in the firmware to reference the new
2933 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
2935 struct iwl_rx_queue *rxq = &priv->rxq;
2936 struct list_head *element;
2937 struct iwl_rx_mem_buffer *rxb;
2938 unsigned long flags;
2941 spin_lock_irqsave(&rxq->lock, flags);
2942 write = rxq->write & ~0x7;
2943 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
2944 /* Get next free Rx buffer, remove from free list */
2945 element = rxq->rx_free.next;
2946 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
2949 /* Point to Rx buffer via next RBD in circular buffer */
2950 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
2951 rxq->queue[rxq->write] = rxb;
2952 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
2955 spin_unlock_irqrestore(&rxq->lock, flags);
2956 /* If the pre-allocated buffer pool is dropping low, schedule to
2958 if (rxq->free_count <= RX_LOW_WATERMARK)
2959 queue_work(priv->workqueue, &priv->rx_replenish);
2962 /* If we've added more space for the firmware to place data, tell it.
2963 * Increment device's write pointer in multiples of 8. */
2964 if ((write != (rxq->write & ~0x7))
2965 || (abs(rxq->write - rxq->read) > 7)) {
2966 spin_lock_irqsave(&rxq->lock, flags);
2967 rxq->need_update = 1;
2968 spin_unlock_irqrestore(&rxq->lock, flags);
2969 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
2978 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
2980 * When moving to rx_free an SKB is allocated for the slot.
2982 * Also restock the Rx queue via iwl3945_rx_queue_restock.
2983 * This is called as a scheduled work item (except for during initialization)
2985 static void iwl3945_rx_allocate(struct iwl_priv *priv)
2987 struct iwl_rx_queue *rxq = &priv->rxq;
2988 struct list_head *element;
2989 struct iwl_rx_mem_buffer *rxb;
2990 unsigned long flags;
2991 spin_lock_irqsave(&rxq->lock, flags);
2992 while (!list_empty(&rxq->rx_used)) {
2993 element = rxq->rx_used.next;
2994 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
2996 /* Alloc a new receive buffer */
2998 alloc_skb(priv->hw_params.rx_buf_size,
2999 __GFP_NOWARN | GFP_ATOMIC);
3001 if (net_ratelimit())
3002 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
3003 /* We don't reschedule replenish work here -- we will
3004 * call the restock method and if it still needs
3005 * more buffers it will schedule replenish */
3009 /* If radiotap head is required, reserve some headroom here.
3010 * The physical head count is a variable rx_stats->phy_count.
3011 * We reserve 4 bytes here. Plus these extra bytes, the
3012 * headroom of the physical head should be enough for the
3013 * radiotap head that iwl3945 supported. See iwl3945_rt.
3015 skb_reserve(rxb->skb, 4);
3017 priv->alloc_rxb_skb++;
3020 /* Get physical address of RB/SKB */
3021 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
3023 priv->hw_params.rx_buf_size,
3024 PCI_DMA_FROMDEVICE);
3025 list_add_tail(&rxb->list, &rxq->rx_free);
3028 spin_unlock_irqrestore(&rxq->lock, flags);
3032 * this should be called while priv->lock is locked
3034 static void __iwl3945_rx_replenish(void *data)
3036 struct iwl_priv *priv = data;
3038 iwl3945_rx_allocate(priv);
3039 iwl3945_rx_queue_restock(priv);
3043 void iwl3945_rx_replenish(void *data)
3045 struct iwl_priv *priv = data;
3046 unsigned long flags;
3048 iwl3945_rx_allocate(priv);
3050 spin_lock_irqsave(&priv->lock, flags);
3051 iwl3945_rx_queue_restock(priv);
3052 spin_unlock_irqrestore(&priv->lock, flags);
3055 /* Convert linear signal-to-noise ratio into dB */
3056 static u8 ratio2dB[100] = {
3057 /* 0 1 2 3 4 5 6 7 8 9 */
3058 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3059 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3060 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3061 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3062 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3063 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3064 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3065 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3066 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3067 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3070 /* Calculates a relative dB value from a ratio of linear
3071 * (i.e. not dB) signal levels.
3072 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3073 int iwl3945_calc_db_from_ratio(int sig_ratio)
3075 /* 1000:1 or higher just report as 60 dB */
3076 if (sig_ratio >= 1000)
3079 /* 100:1 or higher, divide by 10 and use table,
3080 * add 20 dB to make up for divide by 10 */
3081 if (sig_ratio >= 100)
3082 return 20 + (int)ratio2dB[sig_ratio/10];
3084 /* We shouldn't see this */
3088 /* Use table for ratios 1:1 - 99:1 */
3089 return (int)ratio2dB[sig_ratio];
3092 #define PERFECT_RSSI (-20) /* dBm */
3093 #define WORST_RSSI (-95) /* dBm */
3094 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3096 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3097 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3098 * about formulas used below. */
3099 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
3102 int degradation = PERFECT_RSSI - rssi_dbm;
3104 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3105 * as indicator; formula is (signal dbm - noise dbm).
3106 * SNR at or above 40 is a great signal (100%).
3107 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3108 * Weakest usable signal is usually 10 - 15 dB SNR. */
3110 if (rssi_dbm - noise_dbm >= 40)
3112 else if (rssi_dbm < noise_dbm)
3114 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3116 /* Else use just the signal level.
3117 * This formula is a least squares fit of data points collected and
3118 * compared with a reference system that had a percentage (%) display
3119 * for signal quality. */
3121 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3122 (15 * RSSI_RANGE + 62 * degradation)) /
3123 (RSSI_RANGE * RSSI_RANGE);
3127 else if (sig_qual < 1)
3134 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
3136 * Uses the priv->rx_handlers callback function array to invoke
3137 * the appropriate handlers, including command responses,
3138 * frame-received notifications, and other notifications.
3140 static void iwl3945_rx_handle(struct iwl_priv *priv)
3142 struct iwl_rx_mem_buffer *rxb;
3143 struct iwl_rx_packet *pkt;
3144 struct iwl_rx_queue *rxq = &priv->rxq;
3147 unsigned long flags;
3151 /* uCode's read index (stored in shared DRAM) indicates the last Rx
3152 * buffer that the driver may process (last buffer filled by ucode). */
3153 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
3156 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3158 /* Rx interrupt, but nothing sent from uCode */
3160 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3163 rxb = rxq->queue[i];
3165 /* If an RXB doesn't have a Rx queue slot associated with it,
3166 * then a bug has been introduced in the queue refilling
3167 * routines -- catch it here */
3168 BUG_ON(rxb == NULL);
3170 rxq->queue[i] = NULL;
3172 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
3173 priv->hw_params.rx_buf_size,
3174 PCI_DMA_FROMDEVICE);
3175 pkt = (struct iwl_rx_packet *)rxb->skb->data;
3177 /* Reclaim a command buffer only if this packet is a response
3178 * to a (driver-originated) command.
3179 * If the packet (e.g. Rx frame) originated from uCode,
3180 * there is no command buffer to reclaim.
3181 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3182 * but apparently a few don't get set; catch them here. */
3183 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3184 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3185 (pkt->hdr.cmd != REPLY_TX);
3187 /* Based on type of command response or notification,
3188 * handle those that need handling via function in
3189 * rx_handlers table. See iwl3945_setup_rx_handlers() */
3190 if (priv->rx_handlers[pkt->hdr.cmd]) {
3191 IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3192 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3193 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3194 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3196 /* No handling needed */
3197 IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3198 "r %d i %d No handler needed for %s, 0x%02x\n",
3199 r, i, get_cmd_string(pkt->hdr.cmd),
3204 /* Invoke any callbacks, transfer the skb to caller, and
3205 * fire off the (possibly) blocking iwl_send_cmd()
3206 * as we reclaim the driver command queue */
3207 if (rxb && rxb->skb)
3208 iwl3945_tx_cmd_complete(priv, rxb);
3210 IWL_WARN(priv, "Claim null rxb?\n");
3213 /* For now we just don't re-use anything. We can tweak this
3214 * later to try and re-use notification packets and SKBs that
3215 * fail to Rx correctly */
3216 if (rxb->skb != NULL) {
3217 priv->alloc_rxb_skb--;
3218 dev_kfree_skb_any(rxb->skb);
3222 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
3223 priv->hw_params.rx_buf_size,
3224 PCI_DMA_FROMDEVICE);
3225 spin_lock_irqsave(&rxq->lock, flags);
3226 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3227 spin_unlock_irqrestore(&rxq->lock, flags);
3228 i = (i + 1) & RX_QUEUE_MASK;
3229 /* If there are a lot of unused frames,
3230 * restock the Rx queue so ucode won't assert. */
3235 __iwl3945_rx_replenish(priv);
3241 /* Backtrack one entry */
3243 iwl3945_rx_queue_restock(priv);
3246 #ifdef CONFIG_IWL3945_DEBUG
3247 static void iwl3945_print_rx_config_cmd(struct iwl_priv *priv,
3248 struct iwl3945_rxon_cmd *rxon)
3250 IWL_DEBUG_RADIO("RX CONFIG:\n");
3251 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3252 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3253 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3254 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3255 le32_to_cpu(rxon->filter_flags));
3256 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3257 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3258 rxon->ofdm_basic_rates);
3259 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3260 IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
3261 IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
3262 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3266 static void iwl3945_enable_interrupts(struct iwl_priv *priv)
3268 IWL_DEBUG_ISR("Enabling interrupts\n");
3269 set_bit(STATUS_INT_ENABLED, &priv->status);
3270 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3274 /* call this function to flush any scheduled tasklet */
3275 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3277 /* wait to make sure we flush pending tasklet*/
3278 synchronize_irq(priv->pci_dev->irq);
3279 tasklet_kill(&priv->irq_tasklet);
3283 static inline void iwl3945_disable_interrupts(struct iwl_priv *priv)
3285 clear_bit(STATUS_INT_ENABLED, &priv->status);
3287 /* disable interrupts from uCode/NIC to host */
3288 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3290 /* acknowledge/clear/reset any interrupts still pending
3291 * from uCode or flow handler (Rx/Tx DMA) */
3292 iwl_write32(priv, CSR_INT, 0xffffffff);
3293 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
3294 IWL_DEBUG_ISR("Disabled interrupts\n");
3297 static const char *desc_lookup(int i)
3305 return "BAD_CHECKSUM";
3307 return "NMI_INTERRUPT";
3311 return "FATAL_ERROR";
3317 #define ERROR_START_OFFSET (1 * sizeof(u32))
3318 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
3320 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
3323 u32 desc, time, count, base, data1;
3324 u32 blink1, blink2, ilink1, ilink2;
3327 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3329 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
3330 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
3334 rc = iwl_grab_nic_access(priv);
3336 IWL_WARN(priv, "Can not read from adapter at this time.\n");
3340 count = iwl_read_targ_mem(priv, base);
3342 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3343 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
3344 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
3345 priv->status, count);
3348 IWL_ERR(priv, "Desc Time asrtPC blink2 "
3349 "ilink1 nmiPC Line\n");
3350 for (i = ERROR_START_OFFSET;
3351 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
3352 i += ERROR_ELEM_SIZE) {
3353 desc = iwl_read_targ_mem(priv, base + i);
3355 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
3357 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
3359 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
3361 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
3363 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
3365 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
3368 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
3369 desc_lookup(desc), desc, time, blink1, blink2,
3370 ilink1, ilink2, data1);
3373 iwl_release_nic_access(priv);
3377 #define EVENT_START_OFFSET (6 * sizeof(u32))
3380 * iwl3945_print_event_log - Dump error event log to syslog
3382 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
3384 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
3385 u32 num_events, u32 mode)
3388 u32 base; /* SRAM byte address of event log header */
3389 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
3390 u32 ptr; /* SRAM byte address of log data */
3391 u32 ev, time, data; /* event log data */
3393 if (num_events == 0)
3396 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3399 event_size = 2 * sizeof(u32);
3401 event_size = 3 * sizeof(u32);
3403 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
3405 /* "time" is actually "data" for mode 0 (no timestamp).
3406 * place event id # at far right for easier visual parsing. */
3407 for (i = 0; i < num_events; i++) {
3408 ev = iwl_read_targ_mem(priv, ptr);
3410 time = iwl_read_targ_mem(priv, ptr);
3414 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
3416 data = iwl_read_targ_mem(priv, ptr);
3418 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
3423 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
3426 u32 base; /* SRAM byte address of event log header */
3427 u32 capacity; /* event log capacity in # entries */
3428 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
3429 u32 num_wraps; /* # times uCode wrapped to top of log */
3430 u32 next_entry; /* index of next entry to be written by uCode */
3431 u32 size; /* # entries that we'll print */
3433 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3434 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
3435 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
3439 rc = iwl_grab_nic_access(priv);
3441 IWL_WARN(priv, "Can not read from adapter at this time.\n");
3445 /* event log header */
3446 capacity = iwl_read_targ_mem(priv, base);
3447 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
3448 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
3449 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
3451 size = num_wraps ? capacity : next_entry;
3453 /* bail out if nothing in log */
3455 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
3456 iwl_release_nic_access(priv);
3460 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
3463 /* if uCode has wrapped back to top of log, start at the oldest entry,
3464 * i.e the next one that uCode would fill. */
3466 iwl3945_print_event_log(priv, next_entry,
3467 capacity - next_entry, mode);
3469 /* (then/else) start at top of log */
3470 iwl3945_print_event_log(priv, 0, next_entry, mode);
3472 iwl_release_nic_access(priv);
3476 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
3478 static void iwl3945_irq_handle_error(struct iwl_priv *priv)
3480 /* Set the FW error flag -- cleared on iwl3945_down */
3481 set_bit(STATUS_FW_ERROR, &priv->status);
3483 /* Cancel currently queued command. */
3484 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3486 #ifdef CONFIG_IWL3945_DEBUG
3487 if (priv->debug_level & IWL_DL_FW_ERRORS) {
3488 iwl3945_dump_nic_error_log(priv);
3489 iwl3945_dump_nic_event_log(priv);
3490 iwl3945_print_rx_config_cmd(priv, &priv->staging39_rxon);
3494 wake_up_interruptible(&priv->wait_command_queue);
3496 /* Keep the restart process from trying to send host
3497 * commands by clearing the INIT status bit */
3498 clear_bit(STATUS_READY, &priv->status);
3500 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3501 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
3502 "Restarting adapter due to uCode error.\n");
3504 if (iwl3945_is_associated(priv)) {
3505 memcpy(&priv->recovery39_rxon, &priv->active39_rxon,
3506 sizeof(priv->recovery39_rxon));
3507 priv->error_recovering = 1;
3509 queue_work(priv->workqueue, &priv->restart);
3513 static void iwl3945_error_recovery(struct iwl_priv *priv)
3515 unsigned long flags;
3517 memcpy(&priv->staging39_rxon, &priv->recovery39_rxon,
3518 sizeof(priv->staging39_rxon));
3519 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3520 iwl3945_commit_rxon(priv);
3522 iwl3945_add_station(priv, priv->bssid, 1, 0);
3524 spin_lock_irqsave(&priv->lock, flags);
3525 priv->assoc_id = le16_to_cpu(priv->staging39_rxon.assoc_id);
3526 priv->error_recovering = 0;
3527 spin_unlock_irqrestore(&priv->lock, flags);
3530 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
3532 u32 inta, handled = 0;
3534 unsigned long flags;
3535 #ifdef CONFIG_IWL3945_DEBUG
3539 spin_lock_irqsave(&priv->lock, flags);
3541 /* Ack/clear/reset pending uCode interrupts.
3542 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
3543 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
3544 inta = iwl_read32(priv, CSR_INT);
3545 iwl_write32(priv, CSR_INT, inta);
3547 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
3548 * Any new interrupts that happen after this, either while we're
3549 * in this tasklet, or later, will show up in next ISR/tasklet. */
3550 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3551 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
3553 #ifdef CONFIG_IWL3945_DEBUG
3554 if (priv->debug_level & IWL_DL_ISR) {
3555 /* just for debug */
3556 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3557 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3558 inta, inta_mask, inta_fh);
3562 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
3563 * atomic, make sure that inta covers all the interrupts that
3564 * we've discovered, even if FH interrupt came in just after
3565 * reading CSR_INT. */
3566 if (inta_fh & CSR39_FH_INT_RX_MASK)
3567 inta |= CSR_INT_BIT_FH_RX;
3568 if (inta_fh & CSR39_FH_INT_TX_MASK)
3569 inta |= CSR_INT_BIT_FH_TX;
3571 /* Now service all interrupt bits discovered above. */
3572 if (inta & CSR_INT_BIT_HW_ERR) {
3573 IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
3575 /* Tell the device to stop sending interrupts */
3576 iwl3945_disable_interrupts(priv);
3578 iwl3945_irq_handle_error(priv);
3580 handled |= CSR_INT_BIT_HW_ERR;
3582 spin_unlock_irqrestore(&priv->lock, flags);
3587 #ifdef CONFIG_IWL3945_DEBUG
3588 if (priv->debug_level & (IWL_DL_ISR)) {
3589 /* NIC fires this, but we don't use it, redundant with WAKEUP */
3590 if (inta & CSR_INT_BIT_SCD)
3591 IWL_DEBUG_ISR("Scheduler finished to transmit "
3592 "the frame/frames.\n");
3594 /* Alive notification via Rx interrupt will do the real work */
3595 if (inta & CSR_INT_BIT_ALIVE)
3596 IWL_DEBUG_ISR("Alive interrupt\n");
3599 /* Safely ignore these bits for debug checks below */
3600 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
3602 /* Error detected by uCode */
3603 if (inta & CSR_INT_BIT_SW_ERR) {
3604 IWL_ERR(priv, "Microcode SW error detected. "
3605 "Restarting 0x%X.\n", inta);
3606 iwl3945_irq_handle_error(priv);
3607 handled |= CSR_INT_BIT_SW_ERR;
3610 /* uCode wakes up after power-down sleep */
3611 if (inta & CSR_INT_BIT_WAKEUP) {
3612 IWL_DEBUG_ISR("Wakeup interrupt\n");
3613 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
3614 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
3615 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
3616 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
3617 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
3618 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
3619 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
3621 handled |= CSR_INT_BIT_WAKEUP;
3624 /* All uCode command responses, including Tx command responses,
3625 * Rx "responses" (frame-received notification), and other
3626 * notifications from uCode come through here*/
3627 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
3628 iwl3945_rx_handle(priv);
3629 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
3632 if (inta & CSR_INT_BIT_FH_TX) {
3633 IWL_DEBUG_ISR("Tx interrupt\n");
3635 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
3636 if (!iwl_grab_nic_access(priv)) {
3637 iwl_write_direct32(priv, FH39_TCSR_CREDIT
3638 (FH39_SRVC_CHNL), 0x0);
3639 iwl_release_nic_access(priv);
3641 handled |= CSR_INT_BIT_FH_TX;
3644 if (inta & ~handled)
3645 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
3647 if (inta & ~CSR_INI_SET_MASK) {
3648 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
3649 inta & ~CSR_INI_SET_MASK);
3650 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
3653 /* Re-enable all interrupts */
3654 /* only Re-enable if disabled by irq */
3655 if (test_bit(STATUS_INT_ENABLED, &priv->status))
3656 iwl3945_enable_interrupts(priv);
3658 #ifdef CONFIG_IWL3945_DEBUG
3659 if (priv->debug_level & (IWL_DL_ISR)) {
3660 inta = iwl_read32(priv, CSR_INT);
3661 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3662 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3663 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
3664 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
3667 spin_unlock_irqrestore(&priv->lock, flags);
3670 static irqreturn_t iwl3945_isr(int irq, void *data)
3672 struct iwl_priv *priv = data;
3673 u32 inta, inta_mask;
3678 spin_lock(&priv->lock);
3680 /* Disable (but don't clear!) interrupts here to avoid
3681 * back-to-back ISRs and sporadic interrupts from our NIC.
3682 * If we have something to service, the tasklet will re-enable ints.
3683 * If we *don't* have something, we'll re-enable before leaving here. */
3684 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
3685 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3687 /* Discover which interrupts are active/pending */
3688 inta = iwl_read32(priv, CSR_INT);
3689 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3691 /* Ignore interrupt if there's nothing in NIC to service.
3692 * This may be due to IRQ shared with another device,
3693 * or due to sporadic interrupts thrown from our NIC. */
3694 if (!inta && !inta_fh) {
3695 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
3699 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
3700 /* Hardware disappeared */
3701 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
3705 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3706 inta, inta_mask, inta_fh);
3708 inta &= ~CSR_INT_BIT_SCD;
3710 /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
3711 if (likely(inta || inta_fh))
3712 tasklet_schedule(&priv->irq_tasklet);
3714 spin_unlock(&priv->lock);
3719 /* re-enable interrupts here since we don't have anything to service. */
3720 /* only Re-enable if disabled by irq */
3721 if (test_bit(STATUS_INT_ENABLED, &priv->status))
3722 iwl3945_enable_interrupts(priv);
3723 spin_unlock(&priv->lock);
3727 /************************** EEPROM BANDS ****************************
3729 * The iwl3945_eeprom_band definitions below provide the mapping from the
3730 * EEPROM contents to the specific channel number supported for each
3733 * For example, iwl3945_priv->eeprom39.band_3_channels[4] from the band_3
3734 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
3735 * The specific geography and calibration information for that channel
3736 * is contained in the eeprom map itself.
3738 * During init, we copy the eeprom information and channel map
3739 * information into priv->channel_info_24/52 and priv->channel_map_24/52
3741 * channel_map_24/52 provides the index in the channel_info array for a
3742 * given channel. We have to have two separate maps as there is channel
3743 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
3746 * A value of 0xff stored in the channel_map indicates that the channel
3747 * is not supported by the hardware at all.
3749 * A value of 0xfe in the channel_map indicates that the channel is not
3750 * valid for Tx with the current hardware. This means that
3751 * while the system can tune and receive on a given channel, it may not
3752 * be able to associate or transmit any frames on that
3753 * channel. There is no corresponding channel information for that
3756 *********************************************************************/
3759 static const u8 iwl3945_eeprom_band_1[14] = {
3760 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
3764 static const u8 iwl3945_eeprom_band_2[] = { /* 4915-5080MHz */
3765 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
3768 static const u8 iwl3945_eeprom_band_3[] = { /* 5170-5320MHz */
3769 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
3772 static const u8 iwl3945_eeprom_band_4[] = { /* 5500-5700MHz */
3773 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
3776 static const u8 iwl3945_eeprom_band_5[] = { /* 5725-5825MHz */
3777 145, 149, 153, 157, 161, 165
3780 static void iwl3945_init_band_reference(const struct iwl_priv *priv, int band,
3781 int *eeprom_ch_count,
3782 const struct iwl_eeprom_channel
3784 const u8 **eeprom_ch_index)
3787 case 1: /* 2.4GHz band */
3788 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
3789 *eeprom_ch_info = priv->eeprom39.band_1_channels;
3790 *eeprom_ch_index = iwl3945_eeprom_band_1;
3792 case 2: /* 4.9GHz band */
3793 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
3794 *eeprom_ch_info = priv->eeprom39.band_2_channels;
3795 *eeprom_ch_index = iwl3945_eeprom_band_2;
3797 case 3: /* 5.2GHz band */
3798 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
3799 *eeprom_ch_info = priv->eeprom39.band_3_channels;
3800 *eeprom_ch_index = iwl3945_eeprom_band_3;
3802 case 4: /* 5.5GHz band */
3803 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
3804 *eeprom_ch_info = priv->eeprom39.band_4_channels;
3805 *eeprom_ch_index = iwl3945_eeprom_band_4;
3807 case 5: /* 5.7GHz band */
3808 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
3809 *eeprom_ch_info = priv->eeprom39.band_5_channels;
3810 *eeprom_ch_index = iwl3945_eeprom_band_5;
3819 * iwl3945_get_channel_info - Find driver's private channel info
3821 * Based on band and channel number.
3823 const struct iwl_channel_info *
3824 iwl3945_get_channel_info(const struct iwl_priv *priv,
3825 enum ieee80211_band band, u16 channel)
3830 case IEEE80211_BAND_5GHZ:
3831 for (i = 14; i < priv->channel_count; i++) {
3832 if (priv->channel_info[i].channel == channel)
3833 return &priv->channel_info[i];
3837 case IEEE80211_BAND_2GHZ:
3838 if (channel >= 1 && channel <= 14)
3839 return &priv->channel_info[channel - 1];
3841 case IEEE80211_NUM_BANDS:
3848 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
3852 * iwl3945_init_channel_map - Set up driver's info for all possible channels
3854 static int iwl3945_init_channel_map(struct iwl_priv *priv)
3856 int eeprom_ch_count = 0;
3857 const u8 *eeprom_ch_index = NULL;
3858 const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
3860 struct iwl_channel_info *ch_info;
3862 if (priv->channel_count) {
3863 IWL_DEBUG_INFO("Channel map already initialized.\n");
3867 if (priv->eeprom39.version < 0x2f) {
3868 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3869 priv->eeprom39.version);
3873 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
3875 priv->channel_count =
3876 ARRAY_SIZE(iwl3945_eeprom_band_1) +
3877 ARRAY_SIZE(iwl3945_eeprom_band_2) +
3878 ARRAY_SIZE(iwl3945_eeprom_band_3) +
3879 ARRAY_SIZE(iwl3945_eeprom_band_4) +
3880 ARRAY_SIZE(iwl3945_eeprom_band_5);
3882 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
3884 priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
3885 priv->channel_count, GFP_KERNEL);
3886 if (!priv->channel_info) {
3887 IWL_ERR(priv, "Could not allocate channel_info\n");
3888 priv->channel_count = 0;
3892 ch_info = priv->channel_info;
3894 /* Loop through the 5 EEPROM bands adding them in order to the
3895 * channel map we maintain (that contains additional information than
3896 * what just in the EEPROM) */
3897 for (band = 1; band <= 5; band++) {
3899 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
3900 &eeprom_ch_info, &eeprom_ch_index);
3902 /* Loop through each band adding each of the channels */
3903 for (ch = 0; ch < eeprom_ch_count; ch++) {
3904 ch_info->channel = eeprom_ch_index[ch];
3905 ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
3906 IEEE80211_BAND_5GHZ;
3908 /* permanently store EEPROM's channel regulatory flags
3909 * and max power in channel info database. */
3910 ch_info->eeprom = eeprom_ch_info[ch];
3912 /* Copy the run-time flags so they are there even on
3913 * invalid channels */
3914 ch_info->flags = eeprom_ch_info[ch].flags;
3916 if (!(is_channel_valid(ch_info))) {
3917 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
3921 is_channel_a_band(ch_info) ?
3927 /* Initialize regulatory-based run-time data */
3928 ch_info->max_power_avg = ch_info->curr_txpow =
3929 eeprom_ch_info[ch].max_power_avg;
3930 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
3931 ch_info->min_power = 0;
3933 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
3934 " %ddBm): Ad-Hoc %ssupported\n",
3936 is_channel_a_band(ch_info) ?
3938 CHECK_AND_PRINT(VALID),
3939 CHECK_AND_PRINT(IBSS),
3940 CHECK_AND_PRINT(ACTIVE),
3941 CHECK_AND_PRINT(RADAR),
3942 CHECK_AND_PRINT(WIDE),
3943 CHECK_AND_PRINT(DFS),
3944 eeprom_ch_info[ch].flags,
3945 eeprom_ch_info[ch].max_power_avg,
3946 ((eeprom_ch_info[ch].
3947 flags & EEPROM_CHANNEL_IBSS)
3948 && !(eeprom_ch_info[ch].
3949 flags & EEPROM_CHANNEL_RADAR))
3952 /* Set the user_txpower_limit to the highest power
3953 * supported by any channel */
3954 if (eeprom_ch_info[ch].max_power_avg >
3955 priv->user_txpower_limit)
3956 priv->user_txpower_limit =
3957 eeprom_ch_info[ch].max_power_avg;
3963 /* Set up txpower settings in driver for all channels */
3964 if (iwl3945_txpower_set_from_eeprom(priv))
3971 * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
3973 static void iwl3945_free_channel_map(struct iwl_priv *priv)
3975 kfree(priv->channel_info);
3976 priv->channel_count = 0;
3979 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
3980 * sending probe req. This should be set long enough to hear probe responses
3981 * from more than one AP. */
3982 #define IWL_ACTIVE_DWELL_TIME_24 (30) /* all times in msec */
3983 #define IWL_ACTIVE_DWELL_TIME_52 (20)
3985 #define IWL_ACTIVE_DWELL_FACTOR_24GHZ (3)
3986 #define IWL_ACTIVE_DWELL_FACTOR_52GHZ (2)
3988 /* For faster active scanning, scan will move to the next channel if fewer than
3989 * PLCP_QUIET_THRESH packets are heard on this channel within
3990 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
3991 * time if it's a quiet channel (nothing responded to our probe, and there's
3992 * no other traffic).
3993 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
3994 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
3995 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(10) /* msec */
3997 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
3998 * Must be set longer than active dwell time.
3999 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4000 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
4001 #define IWL_PASSIVE_DWELL_TIME_52 (10)
4002 #define IWL_PASSIVE_DWELL_BASE (100)
4003 #define IWL_CHANNEL_TUNE_TIME 5
4005 #define IWL_SCAN_PROBE_MASK(n) (BIT(n) | (BIT(n) - BIT(1)))
4007 static inline u16 iwl3945_get_active_dwell_time(struct iwl_priv *priv,
4008 enum ieee80211_band band,
4011 if (band == IEEE80211_BAND_5GHZ)
4012 return IWL_ACTIVE_DWELL_TIME_52 +
4013 IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
4015 return IWL_ACTIVE_DWELL_TIME_24 +
4016 IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
4019 static u16 iwl3945_get_passive_dwell_time(struct iwl_priv *priv,
4020 enum ieee80211_band band)
4022 u16 passive = (band == IEEE80211_BAND_2GHZ) ?
4023 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4024 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4026 if (iwl3945_is_associated(priv)) {
4027 /* If we're associated, we clamp the maximum passive
4028 * dwell time to be 98% of the beacon interval (minus
4029 * 2 * channel tune time) */
4030 passive = priv->beacon_int;
4031 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4032 passive = IWL_PASSIVE_DWELL_BASE;
4033 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4039 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
4040 enum ieee80211_band band,
4041 u8 is_active, u8 n_probes,
4042 struct iwl3945_scan_channel *scan_ch)
4044 const struct ieee80211_channel *channels = NULL;
4045 const struct ieee80211_supported_band *sband;
4046 const struct iwl_channel_info *ch_info;
4047 u16 passive_dwell = 0;
4048 u16 active_dwell = 0;
4051 sband = iwl_get_hw_mode(priv, band);
4055 channels = sband->channels;
4057 active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
4058 passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
4060 if (passive_dwell <= active_dwell)
4061 passive_dwell = active_dwell + 1;
4063 for (i = 0, added = 0; i < sband->n_channels; i++) {
4064 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4067 scan_ch->channel = channels[i].hw_value;
4069 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
4070 if (!is_channel_valid(ch_info)) {
4071 IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
4076 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4077 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4078 /* If passive , set up for auto-switch
4079 * and use long active_dwell time.
4081 if (!is_active || is_channel_passive(ch_info) ||
4082 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
4083 scan_ch->type = 0; /* passive */
4084 if (IWL_UCODE_API(priv->ucode_ver) == 1)
4085 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
4087 scan_ch->type = 1; /* active */
4090 /* Set direct probe bits. These may be used both for active
4091 * scan channels (probes gets sent right away),
4092 * or for passive channels (probes get se sent only after
4093 * hearing clear Rx packet).*/
4094 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
4096 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4098 /* uCode v1 does not allow setting direct probe bits on
4099 * passive channel. */
4100 if ((scan_ch->type & 1) && n_probes)
4101 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4104 /* Set txpower levels to defaults */
4105 scan_ch->tpc.dsp_atten = 110;
4106 /* scan_pwr_info->tpc.dsp_atten; */
4108 /*scan_pwr_info->tpc.tx_gain; */
4109 if (band == IEEE80211_BAND_5GHZ)
4110 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4112 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4113 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4115 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4119 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4121 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4122 (scan_ch->type & 1) ?
4123 active_dwell : passive_dwell);
4129 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4133 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
4134 struct ieee80211_rate *rates)
4138 for (i = 0; i < IWL_RATE_COUNT; i++) {
4139 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
4140 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4141 rates[i].hw_value_short = i;
4143 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4145 * If CCK != 1M then set short preamble rate flag.
4147 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
4148 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4154 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
4156 static int iwl3945_init_geos(struct iwl_priv *priv)
4158 struct iwl_channel_info *ch;
4159 struct ieee80211_supported_band *sband;
4160 struct ieee80211_channel *channels;
4161 struct ieee80211_channel *geo_ch;
4162 struct ieee80211_rate *rates;
4165 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4166 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4167 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4168 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4172 channels = kzalloc(sizeof(struct ieee80211_channel) *
4173 priv->channel_count, GFP_KERNEL);
4177 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4184 /* 5.2GHz channels start after the 2.4GHz channels */
4185 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4186 sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
4188 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4189 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4191 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4192 sband->channels = channels;
4194 sband->bitrates = rates;
4195 sband->n_bitrates = IWL_RATE_COUNT;
4197 priv->ieee_channels = channels;
4198 priv->ieee_rates = rates;
4200 iwl3945_init_hw_rates(priv, rates);
4202 for (i = 0; i < priv->channel_count; i++) {
4203 ch = &priv->channel_info[i];
4205 /* FIXME: might be removed if scan is OK*/
4206 if (!is_channel_valid(ch))
4209 if (is_channel_a_band(ch))
4210 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4212 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4214 geo_ch = &sband->channels[sband->n_channels++];
4216 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4217 geo_ch->max_power = ch->max_power_avg;
4218 geo_ch->max_antenna_gain = 0xff;
4219 geo_ch->hw_value = ch->channel;
4221 if (is_channel_valid(ch)) {
4222 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4223 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4225 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4226 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4228 if (ch->flags & EEPROM_CHANNEL_RADAR)
4229 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4231 if (ch->max_power_avg > priv->max_channel_txpower_limit)
4232 priv->max_channel_txpower_limit =
4235 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4238 /* Save flags for reg domain usage */
4239 geo_ch->orig_flags = geo_ch->flags;
4241 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4242 ch->channel, geo_ch->center_freq,
4243 is_channel_a_band(ch) ? "5.2" : "2.4",
4244 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4245 "restricted" : "valid",
4249 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4250 priv->cfg->sku & IWL_SKU_A) {
4251 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
4252 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
4253 priv->pci_dev->device, priv->pci_dev->subsystem_device);
4254 priv->cfg->sku &= ~IWL_SKU_A;
4257 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4258 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4259 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
4261 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4262 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4263 &priv->bands[IEEE80211_BAND_2GHZ];
4264 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4265 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4266 &priv->bands[IEEE80211_BAND_5GHZ];
4268 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4274 * iwl3945_free_geos - undo allocations in iwl3945_init_geos
4276 static void iwl3945_free_geos(struct iwl_priv *priv)
4278 kfree(priv->ieee_channels);
4279 kfree(priv->ieee_rates);
4280 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4283 /******************************************************************************
4285 * uCode download functions
4287 ******************************************************************************/
4289 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
4291 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4292 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4293 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4294 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4295 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4296 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
4300 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
4301 * looking at all data.
4303 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
4310 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4312 rc = iwl_grab_nic_access(priv);
4316 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4317 IWL39_RTC_INST_LOWER_BOUND);
4320 for (; len > 0; len -= sizeof(u32), image++) {
4321 /* read data comes through single port, auto-incr addr */
4322 /* NOTE: Use the debugless read so we don't flood kernel log
4323 * if IWL_DL_IO is set */
4324 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4325 if (val != le32_to_cpu(*image)) {
4326 IWL_ERR(priv, "uCode INST section is invalid at "
4327 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4328 save_len - len, val, le32_to_cpu(*image));
4336 iwl_release_nic_access(priv);
4339 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
4346 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
4347 * using sample data 100 bytes apart. If these sample points are good,
4348 * it's a pretty good bet that everything between them is good, too.
4350 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
4357 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4359 rc = iwl_grab_nic_access(priv);
4363 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
4364 /* read data comes through single port, auto-incr addr */
4365 /* NOTE: Use the debugless read so we don't flood kernel log
4366 * if IWL_DL_IO is set */
4367 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4368 i + IWL39_RTC_INST_LOWER_BOUND);
4369 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4370 if (val != le32_to_cpu(*image)) {
4371 #if 0 /* Enable this if you want to see details */
4372 IWL_ERR(priv, "uCode INST section is invalid at "
4373 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4383 iwl_release_nic_access(priv);
4390 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
4391 * and verify its contents
4393 static int iwl3945_verify_ucode(struct iwl_priv *priv)
4400 image = (__le32 *)priv->ucode_boot.v_addr;
4401 len = priv->ucode_boot.len;
4402 rc = iwl3945_verify_inst_sparse(priv, image, len);
4404 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
4408 /* Try initialize */
4409 image = (__le32 *)priv->ucode_init.v_addr;
4410 len = priv->ucode_init.len;
4411 rc = iwl3945_verify_inst_sparse(priv, image, len);
4413 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
4417 /* Try runtime/protocol */
4418 image = (__le32 *)priv->ucode_code.v_addr;
4419 len = priv->ucode_code.len;
4420 rc = iwl3945_verify_inst_sparse(priv, image, len);
4422 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
4426 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
4428 /* Since nothing seems to match, show first several data entries in
4429 * instruction SRAM, so maybe visual inspection will give a clue.
4430 * Selection of bootstrap image (vs. other images) is arbitrary. */
4431 image = (__le32 *)priv->ucode_boot.v_addr;
4432 len = priv->ucode_boot.len;
4433 rc = iwl3945_verify_inst_full(priv, image, len);
4438 static void iwl3945_nic_start(struct iwl_priv *priv)
4440 /* Remove all resets to allow NIC to operate */
4441 iwl_write32(priv, CSR_RESET, 0);
4445 * iwl3945_read_ucode - Read uCode images from disk file.
4447 * Copy into buffers for card to fetch via bus-mastering
4449 static int iwl3945_read_ucode(struct iwl_priv *priv)
4451 struct iwl_ucode *ucode;
4452 int ret = -EINVAL, index;
4453 const struct firmware *ucode_raw;
4454 /* firmware file name contains uCode/driver compatibility version */
4455 const char *name_pre = priv->cfg->fw_name_pre;
4456 const unsigned int api_max = priv->cfg->ucode_api_max;
4457 const unsigned int api_min = priv->cfg->ucode_api_min;
4461 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
4463 /* Ask kernel firmware_class module to get the boot firmware off disk.
4464 * request_firmware() is synchronous, file is in memory on return. */
4465 for (index = api_max; index >= api_min; index--) {
4466 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
4467 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
4469 IWL_ERR(priv, "%s firmware file req failed: %d\n",
4476 if (index < api_max)
4477 IWL_ERR(priv, "Loaded firmware %s, "
4478 "which is deprecated. "
4479 " Please use API v%u instead.\n",
4481 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
4482 buf, ucode_raw->size);
4490 /* Make sure that we got at least our header! */
4491 if (ucode_raw->size < sizeof(*ucode)) {
4492 IWL_ERR(priv, "File size way too small!\n");
4497 /* Data from ucode file: header followed by uCode images */
4498 ucode = (void *)ucode_raw->data;
4500 priv->ucode_ver = le32_to_cpu(ucode->ver);
4501 api_ver = IWL_UCODE_API(priv->ucode_ver);
4502 inst_size = le32_to_cpu(ucode->inst_size);
4503 data_size = le32_to_cpu(ucode->data_size);
4504 init_size = le32_to_cpu(ucode->init_size);
4505 init_data_size = le32_to_cpu(ucode->init_data_size);
4506 boot_size = le32_to_cpu(ucode->boot_size);
4508 /* api_ver should match the api version forming part of the
4509 * firmware filename ... but we don't check for that and only rely
4510 * on the API version read from firware header from here on forward */
4512 if (api_ver < api_min || api_ver > api_max) {
4513 IWL_ERR(priv, "Driver unable to support your firmware API. "
4514 "Driver supports v%u, firmware is v%u.\n",
4516 priv->ucode_ver = 0;
4520 if (api_ver != api_max)
4521 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
4522 "got %u. New firmware can be obtained "
4523 "from http://www.intellinuxwireless.org.\n",
4526 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
4527 IWL_UCODE_MAJOR(priv->ucode_ver),
4528 IWL_UCODE_MINOR(priv->ucode_ver),
4529 IWL_UCODE_API(priv->ucode_ver),
4530 IWL_UCODE_SERIAL(priv->ucode_ver));
4532 IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
4534 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
4535 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
4536 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
4537 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
4538 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
4541 /* Verify size of file vs. image size info in file's header */
4542 if (ucode_raw->size < sizeof(*ucode) +
4543 inst_size + data_size + init_size +
4544 init_data_size + boot_size) {
4546 IWL_DEBUG_INFO("uCode file size %d too small\n",
4547 (int)ucode_raw->size);
4552 /* Verify that uCode images will fit in card's SRAM */
4553 if (inst_size > IWL39_MAX_INST_SIZE) {
4554 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
4560 if (data_size > IWL39_MAX_DATA_SIZE) {
4561 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
4566 if (init_size > IWL39_MAX_INST_SIZE) {
4567 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
4572 if (init_data_size > IWL39_MAX_DATA_SIZE) {
4573 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
4578 if (boot_size > IWL39_MAX_BSM_SIZE) {
4579 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
4585 /* Allocate ucode buffers for card's bus-master loading ... */
4587 /* Runtime instructions and 2 copies of data:
4588 * 1) unmodified from disk
4589 * 2) backup cache for save/restore during power-downs */
4590 priv->ucode_code.len = inst_size;
4591 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
4593 priv->ucode_data.len = data_size;
4594 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
4596 priv->ucode_data_backup.len = data_size;
4597 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4599 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
4600 !priv->ucode_data_backup.v_addr)
4603 /* Initialization instructions and data */
4604 if (init_size && init_data_size) {
4605 priv->ucode_init.len = init_size;
4606 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
4608 priv->ucode_init_data.len = init_data_size;
4609 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4611 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
4615 /* Bootstrap (instructions only, no data) */
4617 priv->ucode_boot.len = boot_size;
4618 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
4620 if (!priv->ucode_boot.v_addr)
4624 /* Copy images into buffers for card's bus-master reads ... */
4626 /* Runtime instructions (first block of data in file) */
4627 src = &ucode->data[0];
4628 len = priv->ucode_code.len;
4629 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
4630 memcpy(priv->ucode_code.v_addr, src, len);
4631 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
4632 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
4634 /* Runtime data (2nd block)
4635 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
4636 src = &ucode->data[inst_size];
4637 len = priv->ucode_data.len;
4638 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
4639 memcpy(priv->ucode_data.v_addr, src, len);
4640 memcpy(priv->ucode_data_backup.v_addr, src, len);
4642 /* Initialization instructions (3rd block) */
4644 src = &ucode->data[inst_size + data_size];
4645 len = priv->ucode_init.len;
4646 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
4648 memcpy(priv->ucode_init.v_addr, src, len);
4651 /* Initialization data (4th block) */
4652 if (init_data_size) {
4653 src = &ucode->data[inst_size + data_size + init_size];
4654 len = priv->ucode_init_data.len;
4655 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
4657 memcpy(priv->ucode_init_data.v_addr, src, len);
4660 /* Bootstrap instructions (5th block) */
4661 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
4662 len = priv->ucode_boot.len;
4663 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
4665 memcpy(priv->ucode_boot.v_addr, src, len);
4667 /* We have our copies now, allow OS release its copies */
4668 release_firmware(ucode_raw);
4672 IWL_ERR(priv, "failed to allocate pci memory\n");
4674 iwl3945_dealloc_ucode_pci(priv);
4677 release_firmware(ucode_raw);
4685 * iwl3945_set_ucode_ptrs - Set uCode address location
4687 * Tell initialization uCode where to find runtime uCode.
4689 * BSM registers initially contain pointers to initialization uCode.
4690 * We need to replace them to load runtime uCode inst and data,
4691 * and to save runtime data when powering down.
4693 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
4698 unsigned long flags;
4700 /* bits 31:0 for 3945 */
4701 pinst = priv->ucode_code.p_addr;
4702 pdata = priv->ucode_data_backup.p_addr;
4704 spin_lock_irqsave(&priv->lock, flags);
4705 rc = iwl_grab_nic_access(priv);
4707 spin_unlock_irqrestore(&priv->lock, flags);
4711 /* Tell bootstrap uCode where to find image to load */
4712 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
4713 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
4714 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
4715 priv->ucode_data.len);
4717 /* Inst byte count must be last to set up, bit 31 signals uCode
4718 * that all new ptr/size info is in place */
4719 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
4720 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
4722 iwl_release_nic_access(priv);
4724 spin_unlock_irqrestore(&priv->lock, flags);
4726 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
4732 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
4734 * Called after REPLY_ALIVE notification received from "initialize" uCode.
4736 * Tell "initialize" uCode to go ahead and load the runtime uCode.
4738 static void iwl3945_init_alive_start(struct iwl_priv *priv)
4740 /* Check alive response for "valid" sign from uCode */
4741 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
4742 /* We had an error bringing up the hardware, so take it
4743 * all the way back down so we can try again */
4744 IWL_DEBUG_INFO("Initialize Alive failed.\n");
4748 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
4749 * This is a paranoid check, because we would not have gotten the
4750 * "initialize" alive if code weren't properly loaded. */
4751 if (iwl3945_verify_ucode(priv)) {
4752 /* Runtime instruction load was bad;
4753 * take it all the way back down so we can try again */
4754 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
4758 /* Send pointers to protocol/runtime uCode image ... init code will
4759 * load and launch runtime uCode, which will send us another "Alive"
4761 IWL_DEBUG_INFO("Initialization Alive received.\n");
4762 if (iwl3945_set_ucode_ptrs(priv)) {
4763 /* Runtime instruction load won't happen;
4764 * take it all the way back down so we can try again */
4765 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
4771 queue_work(priv->workqueue, &priv->restart);
4776 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
4777 struct sk_buff *skb);
4780 * iwl3945_alive_start - called after REPLY_ALIVE notification received
4781 * from protocol/runtime uCode (initialization uCode's
4782 * Alive gets handled by iwl3945_init_alive_start()).
4784 static void iwl3945_alive_start(struct iwl_priv *priv)
4787 int thermal_spin = 0;
4790 IWL_DEBUG_INFO("Runtime Alive received.\n");
4792 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
4793 /* We had an error bringing up the hardware, so take it
4794 * all the way back down so we can try again */
4795 IWL_DEBUG_INFO("Alive failed.\n");
4799 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
4800 * This is a paranoid check, because we would not have gotten the
4801 * "runtime" alive if code weren't properly loaded. */
4802 if (iwl3945_verify_ucode(priv)) {
4803 /* Runtime instruction load was bad;
4804 * take it all the way back down so we can try again */
4805 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
4809 iwl3945_clear_stations_table(priv);
4811 rc = iwl_grab_nic_access(priv);
4813 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
4817 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
4818 IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
4819 iwl_release_nic_access(priv);
4822 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4823 /* if RFKILL is not on, then wait for thermal
4824 * sensor in adapter to kick in */
4825 while (iwl3945_hw_get_temperature(priv) == 0) {
4831 IWL_DEBUG_INFO("Thermal calibration took %dus\n",
4834 set_bit(STATUS_RF_KILL_HW, &priv->status);
4836 /* After the ALIVE response, we can send commands to 3945 uCode */
4837 set_bit(STATUS_ALIVE, &priv->status);
4839 /* Clear out the uCode error bit if it is set */
4840 clear_bit(STATUS_FW_ERROR, &priv->status);
4842 if (iwl_is_rfkill(priv))
4845 ieee80211_wake_queues(priv->hw);
4847 priv->active_rate = priv->rates_mask;
4848 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
4850 iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
4852 if (iwl3945_is_associated(priv)) {
4853 struct iwl3945_rxon_cmd *active_rxon =
4854 (struct iwl3945_rxon_cmd *)(&priv->active39_rxon);
4856 memcpy(&priv->staging39_rxon, &priv->active39_rxon,
4857 sizeof(priv->staging39_rxon));
4858 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4860 /* Initialize our rx_config data */
4861 iwl3945_connection_init_rx_config(priv, priv->iw_mode);
4862 memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
4865 /* Configure Bluetooth device coexistence support */
4866 iwl3945_send_bt_config(priv);
4868 /* Configure the adapter for unassociated operation */
4869 iwl3945_commit_rxon(priv);
4871 iwl3945_reg_txpower_periodic(priv);
4873 iwl3945_led_register(priv);
4875 IWL_DEBUG_INFO("ALIVE processing complete.\n");
4876 set_bit(STATUS_READY, &priv->status);
4877 wake_up_interruptible(&priv->wait_command_queue);
4879 if (priv->error_recovering)
4880 iwl3945_error_recovery(priv);
4882 /* reassociate for ADHOC mode */
4883 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
4884 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
4887 iwl3945_mac_beacon_update(priv->hw, beacon);
4893 queue_work(priv->workqueue, &priv->restart);
4896 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
4898 static void __iwl3945_down(struct iwl_priv *priv)
4900 unsigned long flags;
4901 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
4902 struct ieee80211_conf *conf = NULL;
4904 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
4906 conf = ieee80211_get_hw_conf(priv->hw);
4909 set_bit(STATUS_EXIT_PENDING, &priv->status);
4911 iwl3945_led_unregister(priv);
4912 iwl3945_clear_stations_table(priv);
4914 /* Unblock any waiting calls */
4915 wake_up_interruptible_all(&priv->wait_command_queue);
4917 /* Wipe out the EXIT_PENDING status bit if we are not actually
4918 * exiting the module */
4920 clear_bit(STATUS_EXIT_PENDING, &priv->status);
4922 /* stop and reset the on-board processor */
4923 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4925 /* tell the device to stop sending interrupts */
4926 spin_lock_irqsave(&priv->lock, flags);
4927 iwl3945_disable_interrupts(priv);
4928 spin_unlock_irqrestore(&priv->lock, flags);
4929 iwl_synchronize_irq(priv);
4931 if (priv->mac80211_registered)
4932 ieee80211_stop_queues(priv->hw);
4934 /* If we have not previously called iwl3945_init() then
4935 * clear all bits but the RF Kill and SUSPEND bits and return */
4936 if (!iwl_is_init(priv)) {
4937 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4939 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4941 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4942 STATUS_GEO_CONFIGURED |
4943 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4945 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
4946 STATUS_EXIT_PENDING;
4950 /* ...otherwise clear out all the status bits but the RF Kill and
4951 * SUSPEND bits and continue taking the NIC down. */
4952 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4954 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4956 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4957 STATUS_GEO_CONFIGURED |
4958 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4960 test_bit(STATUS_FW_ERROR, &priv->status) <<
4962 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
4963 STATUS_EXIT_PENDING;
4965 spin_lock_irqsave(&priv->lock, flags);
4966 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4967 spin_unlock_irqrestore(&priv->lock, flags);
4969 iwl3945_hw_txq_ctx_stop(priv);
4970 iwl3945_hw_rxq_stop(priv);
4972 spin_lock_irqsave(&priv->lock, flags);
4973 if (!iwl_grab_nic_access(priv)) {
4974 iwl_write_prph(priv, APMG_CLK_DIS_REG,
4975 APMG_CLK_VAL_DMA_CLK_RQT);
4976 iwl_release_nic_access(priv);
4978 spin_unlock_irqrestore(&priv->lock, flags);
4982 priv->cfg->ops->lib->apm_ops.reset(priv);
4984 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
4986 if (priv->ibss_beacon)
4987 dev_kfree_skb(priv->ibss_beacon);
4988 priv->ibss_beacon = NULL;
4990 /* clear out any free frames */
4991 iwl3945_clear_free_frames(priv);
4994 static void iwl3945_down(struct iwl_priv *priv)
4996 mutex_lock(&priv->mutex);
4997 __iwl3945_down(priv);
4998 mutex_unlock(&priv->mutex);
5000 iwl3945_cancel_deferred_work(priv);
5003 #define MAX_HW_RESTARTS 5
5005 static int __iwl3945_up(struct iwl_priv *priv)
5009 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5010 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
5014 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5015 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
5020 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5021 IWL_ERR(priv, "ucode not available for device bring up\n");
5025 /* If platform's RF_KILL switch is NOT set to KILL */
5026 if (iwl_read32(priv, CSR_GP_CNTRL) &
5027 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5028 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5030 set_bit(STATUS_RF_KILL_HW, &priv->status);
5031 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5032 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
5037 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5039 rc = iwl3945_hw_nic_init(priv);
5041 IWL_ERR(priv, "Unable to int nic\n");
5045 /* make sure rfkill handshake bits are cleared */
5046 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5047 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5048 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5050 /* clear (again), then enable host interrupts */
5051 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5052 iwl3945_enable_interrupts(priv);
5054 /* really make sure rfkill handshake bits are cleared */
5055 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5056 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5058 /* Copy original ucode data image from disk into backup cache.
5059 * This will be used to initialize the on-board processor's
5060 * data SRAM for a clean start when the runtime program first loads. */
5061 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5062 priv->ucode_data.len);
5064 /* We return success when we resume from suspend and rf_kill is on. */
5065 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5068 for (i = 0; i < MAX_HW_RESTARTS; i++) {
5070 iwl3945_clear_stations_table(priv);
5072 /* load bootstrap state machine,
5073 * load bootstrap program into processor's memory,
5074 * prepare to load the "initialize" uCode */
5075 priv->cfg->ops->lib->load_ucode(priv);
5079 "Unable to set up bootstrap uCode: %d\n", rc);
5083 /* start card; "initialize" will load runtime ucode */
5084 iwl3945_nic_start(priv);
5086 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5091 set_bit(STATUS_EXIT_PENDING, &priv->status);
5092 __iwl3945_down(priv);
5093 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5095 /* tried to restart and config the device for as long as our
5096 * patience could withstand */
5097 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
5102 /*****************************************************************************
5104 * Workqueue callbacks
5106 *****************************************************************************/
5108 static void iwl3945_bg_init_alive_start(struct work_struct *data)
5110 struct iwl_priv *priv =
5111 container_of(data, struct iwl_priv, init_alive_start.work);
5113 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5116 mutex_lock(&priv->mutex);
5117 iwl3945_init_alive_start(priv);
5118 mutex_unlock(&priv->mutex);
5121 static void iwl3945_bg_alive_start(struct work_struct *data)
5123 struct iwl_priv *priv =
5124 container_of(data, struct iwl_priv, alive_start.work);
5126 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5129 mutex_lock(&priv->mutex);
5130 iwl3945_alive_start(priv);
5131 mutex_unlock(&priv->mutex);
5134 static void iwl3945_bg_rf_kill(struct work_struct *work)
5136 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5138 wake_up_interruptible(&priv->wait_command_queue);
5140 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5143 mutex_lock(&priv->mutex);
5145 if (!iwl_is_rfkill(priv)) {
5146 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5147 "HW and/or SW RF Kill no longer active, restarting "
5149 if (!test_bit(STATUS_EXIT_PENDING, &priv->status) &&
5150 test_bit(STATUS_ALIVE, &priv->status))
5151 queue_work(priv->workqueue, &priv->restart);
5154 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5155 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5156 "disabled by SW switch\n");
5158 IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
5159 "Kill switch must be turned off for "
5160 "wireless networking to work.\n");
5163 mutex_unlock(&priv->mutex);
5164 iwl3945_rfkill_set_hw_state(priv);
5167 static void iwl3945_rfkill_poll(struct work_struct *data)
5169 struct iwl_priv *priv =
5170 container_of(data, struct iwl_priv, rfkill_poll.work);
5171 unsigned long status = priv->status;
5173 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5174 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5176 set_bit(STATUS_RF_KILL_HW, &priv->status);
5178 if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
5179 queue_work(priv->workqueue, &priv->rf_kill);
5181 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
5182 round_jiffies_relative(2 * HZ));
5186 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5188 static void iwl3945_bg_scan_check(struct work_struct *data)
5190 struct iwl_priv *priv =
5191 container_of(data, struct iwl_priv, scan_check.work);
5193 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5196 mutex_lock(&priv->mutex);
5197 if (test_bit(STATUS_SCANNING, &priv->status) ||
5198 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5199 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5200 "Scan completion watchdog resetting adapter (%dms)\n",
5201 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5203 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5204 iwl3945_send_scan_abort(priv);
5206 mutex_unlock(&priv->mutex);
5209 static void iwl3945_bg_request_scan(struct work_struct *data)
5211 struct iwl_priv *priv =
5212 container_of(data, struct iwl_priv, request_scan);
5213 struct iwl_host_cmd cmd = {
5214 .id = REPLY_SCAN_CMD,
5215 .len = sizeof(struct iwl3945_scan_cmd),
5216 .meta.flags = CMD_SIZE_HUGE,
5219 struct iwl3945_scan_cmd *scan;
5220 struct ieee80211_conf *conf = NULL;
5222 enum ieee80211_band band;
5223 DECLARE_SSID_BUF(ssid);
5225 conf = ieee80211_get_hw_conf(priv->hw);
5227 mutex_lock(&priv->mutex);
5229 if (!iwl_is_ready(priv)) {
5230 IWL_WARN(priv, "request scan called when driver not ready.\n");
5234 /* Make sure the scan wasn't canceled before this queued work
5235 * was given the chance to run... */
5236 if (!test_bit(STATUS_SCANNING, &priv->status))
5239 /* This should never be called or scheduled if there is currently
5240 * a scan active in the hardware. */
5241 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5242 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5243 "Ignoring second request.\n");
5248 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5249 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
5253 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5254 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
5258 if (iwl_is_rfkill(priv)) {
5259 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
5263 if (!test_bit(STATUS_READY, &priv->status)) {
5264 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
5268 if (!priv->scan_bands) {
5269 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
5273 if (!priv->scan39) {
5274 priv->scan39 = kmalloc(sizeof(struct iwl3945_scan_cmd) +
5275 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
5276 if (!priv->scan39) {
5281 scan = priv->scan39;
5282 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
5284 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
5285 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
5287 if (iwl3945_is_associated(priv)) {
5290 u32 suspend_time = 100;
5291 u32 scan_suspend_time = 100;
5292 unsigned long flags;
5294 IWL_DEBUG_INFO("Scanning while associated...\n");
5296 spin_lock_irqsave(&priv->lock, flags);
5297 interval = priv->beacon_int;
5298 spin_unlock_irqrestore(&priv->lock, flags);
5300 scan->suspend_time = 0;
5301 scan->max_out_time = cpu_to_le32(200 * 1024);
5303 interval = suspend_time;
5305 * suspend time format:
5306 * 0-19: beacon interval in usec (time before exec.)
5308 * 24-31: number of beacons (suspend between channels)
5311 extra = (suspend_time / interval) << 24;
5312 scan_suspend_time = 0xFF0FFFFF &
5313 (extra | ((suspend_time % interval) * 1024));
5315 scan->suspend_time = cpu_to_le32(scan_suspend_time);
5316 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
5317 scan_suspend_time, interval);
5320 /* We should add the ability for user to lock to PASSIVE ONLY */
5321 if (priv->one_direct_scan) {
5323 ("Kicking off one direct scan for '%s'\n",
5324 print_ssid(ssid, priv->direct_ssid,
5325 priv->direct_ssid_len));
5326 scan->direct_scan[0].id = WLAN_EID_SSID;
5327 scan->direct_scan[0].len = priv->direct_ssid_len;
5328 memcpy(scan->direct_scan[0].ssid,
5329 priv->direct_ssid, priv->direct_ssid_len);
5332 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
5334 /* We don't build a direct scan probe request; the uCode will do
5335 * that based on the direct_mask added to each channel entry */
5336 scan->tx_cmd.len = cpu_to_le16(
5337 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
5338 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
5339 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5340 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
5341 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
5343 /* flags + rate selection */
5345 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
5346 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
5347 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
5348 scan->good_CRC_th = 0;
5349 band = IEEE80211_BAND_2GHZ;
5350 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
5351 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
5352 scan->good_CRC_th = IWL_GOOD_CRC_TH;
5353 band = IEEE80211_BAND_5GHZ;
5355 IWL_WARN(priv, "Invalid scan band count\n");
5359 /* select Rx antennas */
5360 scan->flags |= iwl3945_get_antenna_flags(priv);
5362 if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
5363 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
5365 scan->channel_count =
5366 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
5368 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5370 if (scan->channel_count == 0) {
5371 IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
5375 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
5376 scan->channel_count * sizeof(struct iwl3945_scan_channel);
5378 scan->len = cpu_to_le16(cmd.len);
5380 set_bit(STATUS_SCAN_HW, &priv->status);
5381 rc = iwl_send_cmd_sync(priv, &cmd);
5385 queue_delayed_work(priv->workqueue, &priv->scan_check,
5386 IWL_SCAN_CHECK_WATCHDOG);
5388 mutex_unlock(&priv->mutex);
5392 /* can not perform scan make sure we clear scanning
5393 * bits from status so next scan request can be performed.
5394 * if we dont clear scanning status bit here all next scan
5397 clear_bit(STATUS_SCAN_HW, &priv->status);
5398 clear_bit(STATUS_SCANNING, &priv->status);
5400 /* inform mac80211 scan aborted */
5401 queue_work(priv->workqueue, &priv->scan_completed);
5402 mutex_unlock(&priv->mutex);
5405 static void iwl3945_bg_up(struct work_struct *data)
5407 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
5409 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5412 mutex_lock(&priv->mutex);
5414 mutex_unlock(&priv->mutex);
5415 iwl3945_rfkill_set_hw_state(priv);
5418 static void iwl3945_bg_restart(struct work_struct *data)
5420 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
5422 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5426 queue_work(priv->workqueue, &priv->up);
5429 static void iwl3945_bg_rx_replenish(struct work_struct *data)
5431 struct iwl_priv *priv =
5432 container_of(data, struct iwl_priv, rx_replenish);
5434 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5437 mutex_lock(&priv->mutex);
5438 iwl3945_rx_replenish(priv);
5439 mutex_unlock(&priv->mutex);
5442 #define IWL_DELAY_NEXT_SCAN (HZ*2)
5444 static void iwl3945_post_associate(struct iwl_priv *priv)
5447 struct ieee80211_conf *conf = NULL;
5449 if (priv->iw_mode == NL80211_IFTYPE_AP) {
5450 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
5455 IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
5456 priv->assoc_id, priv->active39_rxon.bssid_addr);
5458 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5461 if (!priv->vif || !priv->is_open)
5464 iwl_scan_cancel_timeout(priv, 200);
5466 conf = ieee80211_get_hw_conf(priv->hw);
5468 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5469 iwl3945_commit_rxon(priv);
5471 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
5472 iwl3945_setup_rxon_timing(priv);
5473 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5474 sizeof(priv->rxon_timing), &priv->rxon_timing);
5476 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
5477 "Attempting to continue.\n");
5479 priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5481 priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5483 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
5484 priv->assoc_id, priv->beacon_int);
5486 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5487 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5489 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5491 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5492 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
5493 priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
5495 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
5497 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
5498 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
5502 iwl3945_commit_rxon(priv);
5504 switch (priv->iw_mode) {
5505 case NL80211_IFTYPE_STATION:
5506 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
5509 case NL80211_IFTYPE_ADHOC:
5512 iwl3945_add_station(priv, priv->bssid, 0, 0);
5513 iwl3945_sync_sta(priv, IWL_STA_ID,
5514 (priv->band == IEEE80211_BAND_5GHZ) ?
5515 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
5517 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
5518 iwl3945_send_beacon_cmd(priv);
5523 IWL_ERR(priv, "%s Should not be called in %d mode\n",
5524 __func__, priv->iw_mode);
5528 iwl3945_activate_qos(priv, 0);
5530 /* we have just associated, don't start scan too early */
5531 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
5534 static void iwl3945_bg_abort_scan(struct work_struct *work)
5536 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
5538 if (!iwl_is_ready(priv))
5541 mutex_lock(&priv->mutex);
5543 set_bit(STATUS_SCAN_ABORTING, &priv->status);
5544 iwl3945_send_scan_abort(priv);
5546 mutex_unlock(&priv->mutex);
5549 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
5551 static void iwl3945_bg_scan_completed(struct work_struct *work)
5553 struct iwl_priv *priv =
5554 container_of(work, struct iwl_priv, scan_completed);
5556 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
5558 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5561 if (test_bit(STATUS_CONF_PENDING, &priv->status))
5562 iwl3945_mac_config(priv->hw, 0);
5564 ieee80211_scan_completed(priv->hw);
5566 /* Since setting the TXPOWER may have been deferred while
5567 * performing the scan, fire one off */
5568 mutex_lock(&priv->mutex);
5569 iwl3945_hw_reg_send_txpower(priv);
5570 mutex_unlock(&priv->mutex);
5573 /*****************************************************************************
5575 * mac80211 entry point functions
5577 *****************************************************************************/
5579 #define UCODE_READY_TIMEOUT (2 * HZ)
5581 static int iwl3945_mac_start(struct ieee80211_hw *hw)
5583 struct iwl_priv *priv = hw->priv;
5586 IWL_DEBUG_MAC80211("enter\n");
5588 /* we should be verifying the device is ready to be opened */
5589 mutex_lock(&priv->mutex);
5591 memset(&priv->staging39_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
5592 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
5593 * ucode filename and max sizes are card-specific. */
5595 if (!priv->ucode_code.len) {
5596 ret = iwl3945_read_ucode(priv);
5598 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
5599 mutex_unlock(&priv->mutex);
5600 goto out_release_irq;
5604 ret = __iwl3945_up(priv);
5606 mutex_unlock(&priv->mutex);
5608 iwl3945_rfkill_set_hw_state(priv);
5611 goto out_release_irq;
5613 IWL_DEBUG_INFO("Start UP work.\n");
5615 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
5618 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
5619 * mac80211 will not be run successfully. */
5620 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
5621 test_bit(STATUS_READY, &priv->status),
5622 UCODE_READY_TIMEOUT);
5624 if (!test_bit(STATUS_READY, &priv->status)) {
5626 "Wait for START_ALIVE timeout after %dms.\n",
5627 jiffies_to_msecs(UCODE_READY_TIMEOUT));
5629 goto out_release_irq;
5633 /* ucode is running and will send rfkill notifications,
5634 * no need to poll the killswitch state anymore */
5635 cancel_delayed_work(&priv->rfkill_poll);
5638 IWL_DEBUG_MAC80211("leave\n");
5643 IWL_DEBUG_MAC80211("leave - failed\n");
5647 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
5649 struct iwl_priv *priv = hw->priv;
5651 IWL_DEBUG_MAC80211("enter\n");
5653 if (!priv->is_open) {
5654 IWL_DEBUG_MAC80211("leave - skip\n");
5660 if (iwl_is_ready_rf(priv)) {
5661 /* stop mac, cancel any scan request and clear
5662 * RXON_FILTER_ASSOC_MSK BIT
5664 mutex_lock(&priv->mutex);
5665 iwl_scan_cancel_timeout(priv, 100);
5666 mutex_unlock(&priv->mutex);
5671 flush_workqueue(priv->workqueue);
5673 /* start polling the killswitch state again */
5674 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
5675 round_jiffies_relative(2 * HZ));
5677 IWL_DEBUG_MAC80211("leave\n");
5680 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
5682 struct iwl_priv *priv = hw->priv;
5684 IWL_DEBUG_MAC80211("enter\n");
5686 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
5687 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
5689 if (iwl3945_tx_skb(priv, skb))
5690 dev_kfree_skb_any(skb);
5692 IWL_DEBUG_MAC80211("leave\n");
5693 return NETDEV_TX_OK;
5696 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
5697 struct ieee80211_if_init_conf *conf)
5699 struct iwl_priv *priv = hw->priv;
5700 unsigned long flags;
5702 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
5705 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
5709 spin_lock_irqsave(&priv->lock, flags);
5710 priv->vif = conf->vif;
5711 priv->iw_mode = conf->type;
5713 spin_unlock_irqrestore(&priv->lock, flags);
5715 mutex_lock(&priv->mutex);
5717 if (conf->mac_addr) {
5718 IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
5719 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
5722 if (iwl_is_ready(priv))
5723 iwl3945_set_mode(priv, conf->type);
5725 mutex_unlock(&priv->mutex);
5727 IWL_DEBUG_MAC80211("leave\n");
5732 * iwl3945_mac_config - mac80211 config callback
5734 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
5735 * be set inappropriately and the driver currently sets the hardware up to
5736 * use it whenever needed.
5738 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
5740 struct iwl_priv *priv = hw->priv;
5741 const struct iwl_channel_info *ch_info;
5742 struct ieee80211_conf *conf = &hw->conf;
5743 unsigned long flags;
5746 mutex_lock(&priv->mutex);
5747 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
5749 if (!iwl_is_ready(priv)) {
5750 IWL_DEBUG_MAC80211("leave - not ready\n");
5755 if (unlikely(!iwl3945_mod_params.disable_hw_scan &&
5756 test_bit(STATUS_SCANNING, &priv->status))) {
5757 IWL_DEBUG_MAC80211("leave - scanning\n");
5758 set_bit(STATUS_CONF_PENDING, &priv->status);
5759 mutex_unlock(&priv->mutex);
5763 spin_lock_irqsave(&priv->lock, flags);
5765 ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
5766 conf->channel->hw_value);
5767 if (!is_channel_valid(ch_info)) {
5768 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
5769 conf->channel->hw_value, conf->channel->band);
5770 IWL_DEBUG_MAC80211("leave - invalid channel\n");
5771 spin_unlock_irqrestore(&priv->lock, flags);
5776 iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
5778 iwl3945_set_flags_for_phymode(priv, conf->channel->band);
5780 /* The list of supported rates and rate mask can be different
5781 * for each phymode; since the phymode may have changed, reset
5782 * the rate mask to what mac80211 lists */
5783 iwl3945_set_rate(priv);
5785 spin_unlock_irqrestore(&priv->lock, flags);
5787 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
5788 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
5789 iwl3945_hw_channel_switch(priv, conf->channel);
5794 iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
5796 if (!conf->radio_enabled) {
5797 IWL_DEBUG_MAC80211("leave - radio disabled\n");
5801 if (iwl_is_rfkill(priv)) {
5802 IWL_DEBUG_MAC80211("leave - RF kill\n");
5807 iwl3945_set_rate(priv);
5809 if (memcmp(&priv->active39_rxon,
5810 &priv->staging39_rxon, sizeof(priv->staging39_rxon)))
5811 iwl3945_commit_rxon(priv);
5813 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
5815 IWL_DEBUG_MAC80211("leave\n");
5818 clear_bit(STATUS_CONF_PENDING, &priv->status);
5819 mutex_unlock(&priv->mutex);
5823 static void iwl3945_config_ap(struct iwl_priv *priv)
5827 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5830 /* The following should be done only at AP bring up */
5831 if (!(iwl3945_is_associated(priv))) {
5833 /* RXON - unassoc (to set timing command) */
5834 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5835 iwl3945_commit_rxon(priv);
5838 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
5839 iwl3945_setup_rxon_timing(priv);
5840 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5841 sizeof(priv->rxon_timing),
5842 &priv->rxon_timing);
5844 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
5845 "Attempting to continue.\n");
5847 /* FIXME: what should be the assoc_id for AP? */
5848 priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5849 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5850 priv->staging39_rxon.flags |=
5851 RXON_FLG_SHORT_PREAMBLE_MSK;
5853 priv->staging39_rxon.flags &=
5854 ~RXON_FLG_SHORT_PREAMBLE_MSK;
5856 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5857 if (priv->assoc_capability &
5858 WLAN_CAPABILITY_SHORT_SLOT_TIME)
5859 priv->staging39_rxon.flags |=
5860 RXON_FLG_SHORT_SLOT_MSK;
5862 priv->staging39_rxon.flags &=
5863 ~RXON_FLG_SHORT_SLOT_MSK;
5865 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
5866 priv->staging39_rxon.flags &=
5867 ~RXON_FLG_SHORT_SLOT_MSK;
5869 /* restore RXON assoc */
5870 priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5871 iwl3945_commit_rxon(priv);
5872 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
5874 iwl3945_send_beacon_cmd(priv);
5876 /* FIXME - we need to add code here to detect a totally new
5877 * configuration, reset the AP, unassoc, rxon timing, assoc,
5878 * clear sta table, add BCAST sta... */
5881 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
5882 struct ieee80211_vif *vif,
5883 struct ieee80211_if_conf *conf)
5885 struct iwl_priv *priv = hw->priv;
5891 if (priv->vif != vif) {
5892 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
5896 /* handle this temporarily here */
5897 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
5898 conf->changed & IEEE80211_IFCC_BEACON) {
5899 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
5902 mutex_lock(&priv->mutex);
5903 rc = iwl3945_mac_beacon_update(hw, beacon);
5904 mutex_unlock(&priv->mutex);
5909 if (!iwl_is_alive(priv))
5912 mutex_lock(&priv->mutex);
5915 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
5918 * very dubious code was here; the probe filtering flag is never set:
5920 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
5921 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
5924 if (priv->iw_mode == NL80211_IFTYPE_AP) {
5926 conf->bssid = priv->mac_addr;
5927 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
5928 IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
5931 if (priv->ibss_beacon)
5932 dev_kfree_skb(priv->ibss_beacon);
5934 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
5937 if (iwl_is_rfkill(priv))
5940 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
5941 !is_multicast_ether_addr(conf->bssid)) {
5942 /* If there is currently a HW scan going on in the background
5943 * then we need to cancel it else the RXON below will fail. */
5944 if (iwl_scan_cancel_timeout(priv, 100)) {
5945 IWL_WARN(priv, "Aborted scan still in progress "
5947 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
5948 mutex_unlock(&priv->mutex);
5951 memcpy(priv->staging39_rxon.bssid_addr, conf->bssid, ETH_ALEN);
5953 /* TODO: Audit driver for usage of these members and see
5954 * if mac80211 deprecates them (priv->bssid looks like it
5955 * shouldn't be there, but I haven't scanned the IBSS code
5956 * to verify) - jpk */
5957 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
5959 if (priv->iw_mode == NL80211_IFTYPE_AP)
5960 iwl3945_config_ap(priv);
5962 rc = iwl3945_commit_rxon(priv);
5963 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
5964 iwl3945_add_station(priv,
5965 priv->active39_rxon.bssid_addr, 1, 0);
5969 iwl_scan_cancel_timeout(priv, 100);
5970 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5971 iwl3945_commit_rxon(priv);
5975 IWL_DEBUG_MAC80211("leave\n");
5976 mutex_unlock(&priv->mutex);
5981 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
5982 unsigned int changed_flags,
5983 unsigned int *total_flags,
5984 int mc_count, struct dev_addr_list *mc_list)
5986 struct iwl_priv *priv = hw->priv;
5987 __le32 *filter_flags = &priv->staging39_rxon.filter_flags;
5989 IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
5990 changed_flags, *total_flags);
5992 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
5993 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
5994 *filter_flags |= RXON_FILTER_PROMISC_MSK;
5996 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
5998 if (changed_flags & FIF_ALLMULTI) {
5999 if (*total_flags & FIF_ALLMULTI)
6000 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
6002 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
6004 if (changed_flags & FIF_CONTROL) {
6005 if (*total_flags & FIF_CONTROL)
6006 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
6008 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
6010 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
6011 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
6012 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
6014 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
6017 /* We avoid iwl_commit_rxon here to commit the new filter flags
6018 * since mac80211 will call ieee80211_hw_config immediately.
6019 * (mc_list is not supported at this time). Otherwise, we need to
6020 * queue a background iwl_commit_rxon work.
6023 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
6024 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
6027 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
6028 struct ieee80211_if_init_conf *conf)
6030 struct iwl_priv *priv = hw->priv;
6032 IWL_DEBUG_MAC80211("enter\n");
6034 mutex_lock(&priv->mutex);
6036 if (iwl_is_ready_rf(priv)) {
6037 iwl_scan_cancel_timeout(priv, 100);
6038 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6039 iwl3945_commit_rxon(priv);
6041 if (priv->vif == conf->vif) {
6043 memset(priv->bssid, 0, ETH_ALEN);
6045 mutex_unlock(&priv->mutex);
6047 IWL_DEBUG_MAC80211("leave\n");
6050 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6052 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
6053 struct ieee80211_vif *vif,
6054 struct ieee80211_bss_conf *bss_conf,
6057 struct iwl_priv *priv = hw->priv;
6059 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6061 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6062 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6063 bss_conf->use_short_preamble);
6064 if (bss_conf->use_short_preamble)
6065 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6067 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6070 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6071 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6072 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
6073 priv->staging39_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
6075 priv->staging39_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
6078 if (changes & BSS_CHANGED_ASSOC) {
6079 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6080 /* This should never happen as this function should
6081 * never be called from interrupt context. */
6082 if (WARN_ON_ONCE(in_interrupt()))
6084 if (bss_conf->assoc) {
6085 priv->assoc_id = bss_conf->aid;
6086 priv->beacon_int = bss_conf->beacon_int;
6087 priv->timestamp = bss_conf->timestamp;
6088 priv->assoc_capability = bss_conf->assoc_capability;
6089 priv->next_scan_jiffies = jiffies +
6090 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6091 mutex_lock(&priv->mutex);
6092 iwl3945_post_associate(priv);
6093 mutex_unlock(&priv->mutex);
6096 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6098 } else if (changes && iwl3945_is_associated(priv) && priv->assoc_id) {
6099 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6100 iwl3945_send_rxon_assoc(priv);
6105 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
6108 unsigned long flags;
6109 struct iwl_priv *priv = hw->priv;
6110 DECLARE_SSID_BUF(ssid_buf);
6112 IWL_DEBUG_MAC80211("enter\n");
6114 mutex_lock(&priv->mutex);
6115 spin_lock_irqsave(&priv->lock, flags);
6117 if (!iwl_is_ready_rf(priv)) {
6119 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6123 /* we don't schedule scan within next_scan_jiffies period */
6124 if (priv->next_scan_jiffies &&
6125 time_after(priv->next_scan_jiffies, jiffies)) {
6129 /* if we just finished scan ask for delay for a broadcast scan */
6130 if ((len == 0) && priv->last_scan_jiffies &&
6131 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
6137 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
6138 print_ssid(ssid_buf, ssid, len), (int)len);
6140 priv->one_direct_scan = 1;
6141 priv->direct_ssid_len = (u8)
6142 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6143 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
6145 priv->one_direct_scan = 0;
6147 rc = iwl3945_scan_initiate(priv);
6149 IWL_DEBUG_MAC80211("leave\n");
6152 spin_unlock_irqrestore(&priv->lock, flags);
6153 mutex_unlock(&priv->mutex);
6158 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
6159 struct ieee80211_vif *vif,
6160 struct ieee80211_sta *sta,
6161 struct ieee80211_key_conf *key)
6163 struct iwl_priv *priv = hw->priv;
6168 IWL_DEBUG_MAC80211("enter\n");
6170 if (iwl3945_mod_params.sw_crypto) {
6171 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6175 addr = sta ? sta->addr : iwl_bcast_addr;
6176 sta_id = iwl3945_hw_find_station(priv, addr);
6177 if (sta_id == IWL_INVALID_STATION) {
6178 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
6183 mutex_lock(&priv->mutex);
6185 iwl_scan_cancel_timeout(priv, 100);
6189 ret = iwl3945_update_sta_key_info(priv, key, sta_id);
6191 iwl3945_set_rxon_hwcrypto(priv, 1);
6192 iwl3945_commit_rxon(priv);
6193 key->hw_key_idx = sta_id;
6194 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
6195 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
6199 ret = iwl3945_clear_sta_key_info(priv, sta_id);
6201 iwl3945_set_rxon_hwcrypto(priv, 0);
6202 iwl3945_commit_rxon(priv);
6203 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
6210 IWL_DEBUG_MAC80211("leave\n");
6211 mutex_unlock(&priv->mutex);
6216 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
6217 const struct ieee80211_tx_queue_params *params)
6219 struct iwl_priv *priv = hw->priv;
6220 unsigned long flags;
6223 IWL_DEBUG_MAC80211("enter\n");
6225 if (!iwl_is_ready_rf(priv)) {
6226 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6230 if (queue >= AC_NUM) {
6231 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
6235 q = AC_NUM - 1 - queue;
6237 spin_lock_irqsave(&priv->lock, flags);
6239 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
6240 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
6241 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
6242 priv->qos_data.def_qos_parm.ac[q].edca_txop =
6243 cpu_to_le16((params->txop * 32));
6245 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
6246 priv->qos_data.qos_active = 1;
6248 spin_unlock_irqrestore(&priv->lock, flags);
6250 mutex_lock(&priv->mutex);
6251 if (priv->iw_mode == NL80211_IFTYPE_AP)
6252 iwl3945_activate_qos(priv, 1);
6253 else if (priv->assoc_id && iwl3945_is_associated(priv))
6254 iwl3945_activate_qos(priv, 0);
6256 mutex_unlock(&priv->mutex);
6258 IWL_DEBUG_MAC80211("leave\n");
6262 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
6263 struct ieee80211_tx_queue_stats *stats)
6265 struct iwl_priv *priv = hw->priv;
6267 struct iwl_tx_queue *txq;
6268 struct iwl_queue *q;
6269 unsigned long flags;
6271 IWL_DEBUG_MAC80211("enter\n");
6273 if (!iwl_is_ready_rf(priv)) {
6274 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6278 spin_lock_irqsave(&priv->lock, flags);
6280 for (i = 0; i < AC_NUM; i++) {
6281 txq = &priv->txq[i];
6283 avail = iwl_queue_space(q);
6285 stats[i].len = q->n_window - avail;
6286 stats[i].limit = q->n_window - q->high_mark;
6287 stats[i].count = q->n_window;
6290 spin_unlock_irqrestore(&priv->lock, flags);
6292 IWL_DEBUG_MAC80211("leave\n");
6297 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
6299 struct iwl_priv *priv = hw->priv;
6300 unsigned long flags;
6302 mutex_lock(&priv->mutex);
6303 IWL_DEBUG_MAC80211("enter\n");
6305 iwl_reset_qos(priv);
6307 spin_lock_irqsave(&priv->lock, flags);
6309 priv->assoc_capability = 0;
6310 priv->call_post_assoc_from_beacon = 0;
6312 /* new association get rid of ibss beacon skb */
6313 if (priv->ibss_beacon)
6314 dev_kfree_skb(priv->ibss_beacon);
6316 priv->ibss_beacon = NULL;
6318 priv->beacon_int = priv->hw->conf.beacon_int;
6319 priv->timestamp = 0;
6320 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
6321 priv->beacon_int = 0;
6323 spin_unlock_irqrestore(&priv->lock, flags);
6325 if (!iwl_is_ready_rf(priv)) {
6326 IWL_DEBUG_MAC80211("leave - not ready\n");
6327 mutex_unlock(&priv->mutex);
6331 /* we are restarting association process
6332 * clear RXON_FILTER_ASSOC_MSK bit
6334 if (priv->iw_mode != NL80211_IFTYPE_AP) {
6335 iwl_scan_cancel_timeout(priv, 100);
6336 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6337 iwl3945_commit_rxon(priv);
6340 /* Per mac80211.h: This is only used in IBSS mode... */
6341 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
6343 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
6344 mutex_unlock(&priv->mutex);
6348 iwl3945_set_rate(priv);
6350 mutex_unlock(&priv->mutex);
6352 IWL_DEBUG_MAC80211("leave\n");
6356 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
6358 struct iwl_priv *priv = hw->priv;
6359 unsigned long flags;
6361 IWL_DEBUG_MAC80211("enter\n");
6363 if (!iwl_is_ready_rf(priv)) {
6364 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6368 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
6369 IWL_DEBUG_MAC80211("leave - not IBSS\n");
6373 spin_lock_irqsave(&priv->lock, flags);
6375 if (priv->ibss_beacon)
6376 dev_kfree_skb(priv->ibss_beacon);
6378 priv->ibss_beacon = skb;
6382 IWL_DEBUG_MAC80211("leave\n");
6383 spin_unlock_irqrestore(&priv->lock, flags);
6385 iwl_reset_qos(priv);
6387 iwl3945_post_associate(priv);
6393 /*****************************************************************************
6397 *****************************************************************************/
6399 #ifdef CONFIG_IWL3945_DEBUG
6402 * The following adds a new attribute to the sysfs representation
6403 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
6404 * used for controlling the debug level.
6406 * See the level definitions in iwl for details.
6408 static ssize_t show_debug_level(struct device *d,
6409 struct device_attribute *attr, char *buf)
6411 struct iwl_priv *priv = d->driver_data;
6413 return sprintf(buf, "0x%08X\n", priv->debug_level);
6415 static ssize_t store_debug_level(struct device *d,
6416 struct device_attribute *attr,
6417 const char *buf, size_t count)
6419 struct iwl_priv *priv = d->driver_data;
6423 ret = strict_strtoul(buf, 0, &val);
6425 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
6427 priv->debug_level = val;
6429 return strnlen(buf, count);
6432 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
6433 show_debug_level, store_debug_level);
6435 #endif /* CONFIG_IWL3945_DEBUG */
6437 static ssize_t show_temperature(struct device *d,
6438 struct device_attribute *attr, char *buf)
6440 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6442 if (!iwl_is_alive(priv))
6445 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
6448 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
6450 static ssize_t show_tx_power(struct device *d,
6451 struct device_attribute *attr, char *buf)
6453 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6454 return sprintf(buf, "%d\n", priv->user_txpower_limit);
6457 static ssize_t store_tx_power(struct device *d,
6458 struct device_attribute *attr,
6459 const char *buf, size_t count)
6461 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6462 char *p = (char *)buf;
6465 val = simple_strtoul(p, &p, 10);
6467 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
6469 iwl3945_hw_reg_set_txpower(priv, val);
6474 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
6476 static ssize_t show_flags(struct device *d,
6477 struct device_attribute *attr, char *buf)
6479 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6481 return sprintf(buf, "0x%04X\n", priv->active39_rxon.flags);
6484 static ssize_t store_flags(struct device *d,
6485 struct device_attribute *attr,
6486 const char *buf, size_t count)
6488 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6489 u32 flags = simple_strtoul(buf, NULL, 0);
6491 mutex_lock(&priv->mutex);
6492 if (le32_to_cpu(priv->staging39_rxon.flags) != flags) {
6493 /* Cancel any currently running scans... */
6494 if (iwl_scan_cancel_timeout(priv, 100))
6495 IWL_WARN(priv, "Could not cancel scan.\n");
6497 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
6499 priv->staging39_rxon.flags = cpu_to_le32(flags);
6500 iwl3945_commit_rxon(priv);
6503 mutex_unlock(&priv->mutex);
6508 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
6510 static ssize_t show_filter_flags(struct device *d,
6511 struct device_attribute *attr, char *buf)
6513 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6515 return sprintf(buf, "0x%04X\n",
6516 le32_to_cpu(priv->active39_rxon.filter_flags));
6519 static ssize_t store_filter_flags(struct device *d,
6520 struct device_attribute *attr,
6521 const char *buf, size_t count)
6523 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6524 u32 filter_flags = simple_strtoul(buf, NULL, 0);
6526 mutex_lock(&priv->mutex);
6527 if (le32_to_cpu(priv->staging39_rxon.filter_flags) != filter_flags) {
6528 /* Cancel any currently running scans... */
6529 if (iwl_scan_cancel_timeout(priv, 100))
6530 IWL_WARN(priv, "Could not cancel scan.\n");
6532 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
6533 "0x%04X\n", filter_flags);
6534 priv->staging39_rxon.filter_flags =
6535 cpu_to_le32(filter_flags);
6536 iwl3945_commit_rxon(priv);
6539 mutex_unlock(&priv->mutex);
6544 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
6545 store_filter_flags);
6547 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
6549 static ssize_t show_measurement(struct device *d,
6550 struct device_attribute *attr, char *buf)
6552 struct iwl_priv *priv = dev_get_drvdata(d);
6553 struct iwl_spectrum_notification measure_report;
6554 u32 size = sizeof(measure_report), len = 0, ofs = 0;
6555 u8 *data = (u8 *)&measure_report;
6556 unsigned long flags;
6558 spin_lock_irqsave(&priv->lock, flags);
6559 if (!(priv->measurement_status & MEASUREMENT_READY)) {
6560 spin_unlock_irqrestore(&priv->lock, flags);
6563 memcpy(&measure_report, &priv->measure_report, size);
6564 priv->measurement_status = 0;
6565 spin_unlock_irqrestore(&priv->lock, flags);
6567 while (size && (PAGE_SIZE - len)) {
6568 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6569 PAGE_SIZE - len, 1);
6571 if (PAGE_SIZE - len)
6575 size -= min(size, 16U);
6581 static ssize_t store_measurement(struct device *d,
6582 struct device_attribute *attr,
6583 const char *buf, size_t count)
6585 struct iwl_priv *priv = dev_get_drvdata(d);
6586 struct ieee80211_measurement_params params = {
6587 .channel = le16_to_cpu(priv->active39_rxon.channel),
6588 .start_time = cpu_to_le64(priv->last_tsf),
6589 .duration = cpu_to_le16(1),
6591 u8 type = IWL_MEASURE_BASIC;
6597 strncpy(buffer, buf, min(sizeof(buffer), count));
6598 channel = simple_strtoul(p, NULL, 0);
6600 params.channel = channel;
6603 while (*p && *p != ' ')
6606 type = simple_strtoul(p + 1, NULL, 0);
6609 IWL_DEBUG_INFO("Invoking measurement of type %d on "
6610 "channel %d (for '%s')\n", type, params.channel, buf);
6611 iwl3945_get_measurement(priv, ¶ms, type);
6616 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
6617 show_measurement, store_measurement);
6618 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
6620 static ssize_t store_retry_rate(struct device *d,
6621 struct device_attribute *attr,
6622 const char *buf, size_t count)
6624 struct iwl_priv *priv = dev_get_drvdata(d);
6626 priv->retry_rate = simple_strtoul(buf, NULL, 0);
6627 if (priv->retry_rate <= 0)
6628 priv->retry_rate = 1;
6633 static ssize_t show_retry_rate(struct device *d,
6634 struct device_attribute *attr, char *buf)
6636 struct iwl_priv *priv = dev_get_drvdata(d);
6637 return sprintf(buf, "%d", priv->retry_rate);
6640 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
6643 static ssize_t store_power_level(struct device *d,
6644 struct device_attribute *attr,
6645 const char *buf, size_t count)
6647 struct iwl_priv *priv = dev_get_drvdata(d);
6651 mode = simple_strtoul(buf, NULL, 0);
6652 mutex_lock(&priv->mutex);
6654 if (!iwl_is_ready(priv)) {
6659 if ((mode < 1) || (mode > IWL39_POWER_LIMIT) ||
6660 (mode == IWL39_POWER_AC))
6661 mode = IWL39_POWER_AC;
6663 mode |= IWL_POWER_ENABLED;
6665 if (mode != priv->power_mode) {
6666 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
6668 IWL_DEBUG_MAC80211("failed setting power mode.\n");
6671 priv->power_mode = mode;
6677 mutex_unlock(&priv->mutex);
6681 #define MAX_WX_STRING 80
6683 /* Values are in microsecond */
6684 static const s32 timeout_duration[] = {
6691 static const s32 period_duration[] = {
6699 static ssize_t show_power_level(struct device *d,
6700 struct device_attribute *attr, char *buf)
6702 struct iwl_priv *priv = dev_get_drvdata(d);
6703 int level = IWL_POWER_LEVEL(priv->power_mode);
6706 p += sprintf(p, "%d ", level);
6708 case IWL_POWER_MODE_CAM:
6709 case IWL39_POWER_AC:
6710 p += sprintf(p, "(AC)");
6712 case IWL39_POWER_BATTERY:
6713 p += sprintf(p, "(BATTERY)");
6717 "(Timeout %dms, Period %dms)",
6718 timeout_duration[level - 1] / 1000,
6719 period_duration[level - 1] / 1000);
6722 if (!(priv->power_mode & IWL_POWER_ENABLED))
6723 p += sprintf(p, " OFF\n");
6725 p += sprintf(p, " \n");
6731 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
6734 static ssize_t show_channels(struct device *d,
6735 struct device_attribute *attr, char *buf)
6737 /* all this shit doesn't belong into sysfs anyway */
6741 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
6743 static ssize_t show_statistics(struct device *d,
6744 struct device_attribute *attr, char *buf)
6746 struct iwl_priv *priv = dev_get_drvdata(d);
6747 u32 size = sizeof(struct iwl3945_notif_statistics);
6748 u32 len = 0, ofs = 0;
6749 u8 *data = (u8 *)&priv->statistics_39;
6752 if (!iwl_is_alive(priv))
6755 mutex_lock(&priv->mutex);
6756 rc = iwl3945_send_statistics_request(priv);
6757 mutex_unlock(&priv->mutex);
6761 "Error sending statistics request: 0x%08X\n", rc);
6765 while (size && (PAGE_SIZE - len)) {
6766 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
6767 PAGE_SIZE - len, 1);
6769 if (PAGE_SIZE - len)
6773 size -= min(size, 16U);
6779 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
6781 static ssize_t show_antenna(struct device *d,
6782 struct device_attribute *attr, char *buf)
6784 struct iwl_priv *priv = dev_get_drvdata(d);
6786 if (!iwl_is_alive(priv))
6789 return sprintf(buf, "%d\n", priv->antenna);
6792 static ssize_t store_antenna(struct device *d,
6793 struct device_attribute *attr,
6794 const char *buf, size_t count)
6797 struct iwl_priv *priv = dev_get_drvdata(d);
6802 if (sscanf(buf, "%1i", &ant) != 1) {
6803 IWL_DEBUG_INFO("not in hex or decimal form.\n");
6807 if ((ant >= 0) && (ant <= 2)) {
6808 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
6809 priv->antenna = (enum iwl3945_antenna)ant;
6811 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
6817 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
6819 static ssize_t show_status(struct device *d,
6820 struct device_attribute *attr, char *buf)
6822 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
6823 if (!iwl_is_alive(priv))
6825 return sprintf(buf, "0x%08x\n", (int)priv->status);
6828 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
6830 static ssize_t dump_error_log(struct device *d,
6831 struct device_attribute *attr,
6832 const char *buf, size_t count)
6834 char *p = (char *)buf;
6837 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
6839 return strnlen(buf, count);
6842 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
6844 static ssize_t dump_event_log(struct device *d,
6845 struct device_attribute *attr,
6846 const char *buf, size_t count)
6848 char *p = (char *)buf;
6851 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
6853 return strnlen(buf, count);
6856 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
6858 /*****************************************************************************
6860 * driver setup and tear down
6862 *****************************************************************************/
6864 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
6866 priv->workqueue = create_workqueue(DRV_NAME);
6868 init_waitqueue_head(&priv->wait_command_queue);
6870 INIT_WORK(&priv->up, iwl3945_bg_up);
6871 INIT_WORK(&priv->restart, iwl3945_bg_restart);
6872 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
6873 INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
6874 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
6875 INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
6876 INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
6877 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
6878 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
6879 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
6880 INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
6881 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
6883 iwl3945_hw_setup_deferred_work(priv);
6885 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
6886 iwl3945_irq_tasklet, (unsigned long)priv);
6889 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
6891 iwl3945_hw_cancel_deferred_work(priv);
6893 cancel_delayed_work_sync(&priv->init_alive_start);
6894 cancel_delayed_work(&priv->scan_check);
6895 cancel_delayed_work(&priv->alive_start);
6896 cancel_work_sync(&priv->beacon_update);
6899 static struct attribute *iwl3945_sysfs_entries[] = {
6900 &dev_attr_antenna.attr,
6901 &dev_attr_channels.attr,
6902 &dev_attr_dump_errors.attr,
6903 &dev_attr_dump_events.attr,
6904 &dev_attr_flags.attr,
6905 &dev_attr_filter_flags.attr,
6906 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
6907 &dev_attr_measurement.attr,
6909 &dev_attr_power_level.attr,
6910 &dev_attr_retry_rate.attr,
6911 &dev_attr_statistics.attr,
6912 &dev_attr_status.attr,
6913 &dev_attr_temperature.attr,
6914 &dev_attr_tx_power.attr,
6915 #ifdef CONFIG_IWL3945_DEBUG
6916 &dev_attr_debug_level.attr,
6921 static struct attribute_group iwl3945_attribute_group = {
6922 .name = NULL, /* put in device directory */
6923 .attrs = iwl3945_sysfs_entries,
6926 static struct ieee80211_ops iwl3945_hw_ops = {
6927 .tx = iwl3945_mac_tx,
6928 .start = iwl3945_mac_start,
6929 .stop = iwl3945_mac_stop,
6930 .add_interface = iwl3945_mac_add_interface,
6931 .remove_interface = iwl3945_mac_remove_interface,
6932 .config = iwl3945_mac_config,
6933 .config_interface = iwl3945_mac_config_interface,
6934 .configure_filter = iwl3945_configure_filter,
6935 .set_key = iwl3945_mac_set_key,
6936 .get_tx_stats = iwl3945_mac_get_tx_stats,
6937 .conf_tx = iwl3945_mac_conf_tx,
6938 .reset_tsf = iwl3945_mac_reset_tsf,
6939 .bss_info_changed = iwl3945_bss_info_changed,
6940 .hw_scan = iwl3945_mac_hw_scan
6943 static int iwl3945_init_drv(struct iwl_priv *priv)
6947 priv->retry_rate = 1;
6948 priv->ibss_beacon = NULL;
6950 spin_lock_init(&priv->lock);
6951 spin_lock_init(&priv->power_data_39.lock);
6952 spin_lock_init(&priv->sta_lock);
6953 spin_lock_init(&priv->hcmd_lock);
6955 INIT_LIST_HEAD(&priv->free_frames);
6957 mutex_init(&priv->mutex);
6959 /* Clear the driver's (not device's) station table */
6960 iwl3945_clear_stations_table(priv);
6962 priv->data_retry_limit = -1;
6963 priv->ieee_channels = NULL;
6964 priv->ieee_rates = NULL;
6965 priv->band = IEEE80211_BAND_2GHZ;
6967 priv->iw_mode = NL80211_IFTYPE_STATION;
6969 iwl_reset_qos(priv);
6971 priv->qos_data.qos_active = 0;
6972 priv->qos_data.qos_cap.val = 0;
6974 priv->rates_mask = IWL_RATES_MASK;
6975 /* If power management is turned on, default to AC mode */
6976 priv->power_mode = IWL39_POWER_AC;
6977 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
6979 ret = iwl3945_init_channel_map(priv);
6981 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
6985 ret = iwl3945_init_geos(priv);
6987 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
6988 goto err_free_channel_map;
6993 err_free_channel_map:
6994 iwl3945_free_channel_map(priv);
6999 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7002 struct iwl_priv *priv;
7003 struct ieee80211_hw *hw;
7004 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
7005 unsigned long flags;
7007 /***********************
7008 * 1. Allocating HW data
7009 * ********************/
7011 /* mac80211 allocates memory for this device instance, including
7012 * space for this driver's private structure */
7013 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
7015 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
7020 SET_IEEE80211_DEV(hw, &pdev->dev);
7022 if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
7023 (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
7025 "invalid queues_num, should be between %d and %d\n",
7026 IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
7032 * Disabling hardware scan means that mac80211 will perform scans
7033 * "the hard way", rather than using device's scan.
7035 if (iwl3945_mod_params.disable_hw_scan) {
7036 IWL_DEBUG_INFO("Disabling hw_scan\n");
7037 iwl3945_hw_ops.hw_scan = NULL;
7041 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7043 priv->pci_dev = pdev;
7045 #ifdef CONFIG_IWL3945_DEBUG
7046 priv->debug_level = iwl3945_mod_params.debug;
7047 atomic_set(&priv->restrict_refcnt, 0);
7049 hw->rate_control_algorithm = "iwl-3945-rs";
7050 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
7052 /* Select antenna (may be helpful if only one antenna is connected) */
7053 priv->antenna = (enum iwl3945_antenna)iwl3945_mod_params.antenna;
7055 /* Tell mac80211 our characteristics */
7056 hw->flags = IEEE80211_HW_SIGNAL_DBM |
7057 IEEE80211_HW_NOISE_DBM;
7059 hw->wiphy->interface_modes =
7060 BIT(NL80211_IFTYPE_STATION) |
7061 BIT(NL80211_IFTYPE_ADHOC);
7063 hw->wiphy->fw_handles_regulatory = true;
7065 /* 4 EDCA QOS priorities */
7068 /***************************
7069 * 2. Initializing PCI bus
7070 * *************************/
7071 if (pci_enable_device(pdev)) {
7073 goto out_ieee80211_free_hw;
7076 pci_set_master(pdev);
7078 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7080 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7082 IWL_WARN(priv, "No suitable DMA available.\n");
7083 goto out_pci_disable_device;
7086 pci_set_drvdata(pdev, priv);
7087 err = pci_request_regions(pdev, DRV_NAME);
7089 goto out_pci_disable_device;
7091 /***********************
7092 * 3. Read REV Register
7093 * ********************/
7094 priv->hw_base = pci_iomap(pdev, 0, 0);
7095 if (!priv->hw_base) {
7097 goto out_pci_release_regions;
7100 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7101 (unsigned long long) pci_resource_len(pdev, 0));
7102 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7104 /* We disable the RETRY_TIMEOUT register (0x41) to keep
7105 * PCI Tx retries from interfering with C3 CPU state */
7106 pci_write_config_byte(pdev, 0x41, 0x00);
7109 err = priv->cfg->ops->lib->apm_ops.init(priv);
7111 IWL_DEBUG_INFO("Failed to init APMG\n");
7115 /***********************
7117 * ********************/
7119 /* Read the EEPROM */
7120 err = iwl3945_eeprom_init(priv);
7122 IWL_ERR(priv, "Unable to init EEPROM\n");
7123 goto out_remove_sysfs;
7125 /* MAC Address location in EEPROM same for 3945/4965 */
7126 get_eeprom_mac(priv, priv->mac_addr);
7127 IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
7128 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7130 /***********************
7131 * 5. Setup HW Constants
7132 * ********************/
7133 /* Device-specific setup */
7134 if (iwl3945_hw_set_hw_params(priv)) {
7135 IWL_ERR(priv, "failed to set hw settings\n");
7139 /***********************
7141 * ********************/
7143 err = iwl3945_init_drv(priv);
7145 IWL_ERR(priv, "initializing driver failed\n");
7149 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
7152 /***********************************
7153 * 7. Initialize Module Parameters
7154 * **********************************/
7156 /* Initialize module parameter values here */
7157 /* Disable radio (SW RF KILL) via parameter when loading driver */
7158 if (iwl3945_mod_params.disable) {
7159 set_bit(STATUS_RF_KILL_SW, &priv->status);
7160 IWL_DEBUG_INFO("Radio disabled.\n");
7164 /***********************
7166 * ********************/
7168 spin_lock_irqsave(&priv->lock, flags);
7169 iwl3945_disable_interrupts(priv);
7170 spin_unlock_irqrestore(&priv->lock, flags);
7172 pci_enable_msi(priv->pci_dev);
7174 err = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
7177 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
7178 goto out_disable_msi;
7181 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7183 IWL_ERR(priv, "failed to create sysfs device attributes\n");
7184 goto out_release_irq;
7187 iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
7188 iwl3945_setup_deferred_work(priv);
7189 iwl3945_setup_rx_handlers(priv);
7191 /*********************************
7192 * 9. Setup and Register mac80211
7193 * *******************************/
7195 err = ieee80211_register_hw(priv->hw);
7197 IWL_ERR(priv, "Failed to register network device: %d\n", err);
7198 goto out_remove_sysfs;
7201 priv->hw->conf.beacon_int = 100;
7202 priv->mac80211_registered = 1;
7204 err = iwl3945_rfkill_init(priv);
7206 IWL_ERR(priv, "Unable to initialize RFKILL system. "
7207 "Ignoring error: %d\n", err);
7209 /* Start monitoring the killswitch */
7210 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
7216 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7218 iwl3945_free_geos(priv);
7221 free_irq(priv->pci_dev->irq, priv);
7222 destroy_workqueue(priv->workqueue);
7223 priv->workqueue = NULL;
7224 iwl3945_unset_hw_params(priv);
7226 pci_disable_msi(priv->pci_dev);
7228 pci_iounmap(pdev, priv->hw_base);
7229 out_pci_release_regions:
7230 pci_release_regions(pdev);
7231 out_pci_disable_device:
7232 pci_disable_device(pdev);
7233 pci_set_drvdata(pdev, NULL);
7234 out_ieee80211_free_hw:
7235 ieee80211_free_hw(priv->hw);
7240 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
7242 struct iwl_priv *priv = pci_get_drvdata(pdev);
7243 unsigned long flags;
7248 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
7250 set_bit(STATUS_EXIT_PENDING, &priv->status);
7252 if (priv->mac80211_registered) {
7253 ieee80211_unregister_hw(priv->hw);
7254 priv->mac80211_registered = 0;
7259 /* make sure we flush any pending irq or
7260 * tasklet for the driver
7262 spin_lock_irqsave(&priv->lock, flags);
7263 iwl3945_disable_interrupts(priv);
7264 spin_unlock_irqrestore(&priv->lock, flags);
7266 iwl_synchronize_irq(priv);
7268 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7270 iwl3945_rfkill_unregister(priv);
7271 cancel_delayed_work(&priv->rfkill_poll);
7273 iwl3945_dealloc_ucode_pci(priv);
7276 iwl_rx_queue_free(priv, &priv->rxq);
7277 iwl3945_hw_txq_ctx_free(priv);
7279 iwl3945_unset_hw_params(priv);
7280 iwl3945_clear_stations_table(priv);
7282 /*netif_stop_queue(dev); */
7283 flush_workqueue(priv->workqueue);
7285 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
7286 * priv->workqueue... so we can't take down the workqueue
7288 destroy_workqueue(priv->workqueue);
7289 priv->workqueue = NULL;
7291 free_irq(pdev->irq, priv);
7292 pci_disable_msi(pdev);
7294 pci_iounmap(pdev, priv->hw_base);
7295 pci_release_regions(pdev);
7296 pci_disable_device(pdev);
7297 pci_set_drvdata(pdev, NULL);
7299 iwl3945_free_channel_map(priv);
7300 iwl3945_free_geos(priv);
7301 kfree(priv->scan39);
7302 if (priv->ibss_beacon)
7303 dev_kfree_skb(priv->ibss_beacon);
7305 ieee80211_free_hw(priv->hw);
7310 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
7312 struct iwl_priv *priv = pci_get_drvdata(pdev);
7314 if (priv->is_open) {
7315 set_bit(STATUS_IN_SUSPEND, &priv->status);
7316 iwl3945_mac_stop(priv->hw);
7319 pci_save_state(pdev);
7320 pci_disable_device(pdev);
7321 pci_set_power_state(pdev, PCI_D3hot);
7326 static int iwl3945_pci_resume(struct pci_dev *pdev)
7328 struct iwl_priv *priv = pci_get_drvdata(pdev);
7330 pci_set_power_state(pdev, PCI_D0);
7331 pci_enable_device(pdev);
7332 pci_restore_state(pdev);
7335 iwl3945_mac_start(priv->hw);
7337 clear_bit(STATUS_IN_SUSPEND, &priv->status);
7341 #endif /* CONFIG_PM */
7343 /*************** RFKILL FUNCTIONS **********/
7344 #ifdef CONFIG_IWL3945_RFKILL
7345 /* software rf-kill from user */
7346 static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
7348 struct iwl_priv *priv = data;
7354 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7357 IWL_DEBUG_RF_KILL("we received soft RFKILL set to state %d\n", state);
7358 mutex_lock(&priv->mutex);
7361 case RFKILL_STATE_UNBLOCKED:
7362 if (iwl_is_rfkill_hw(priv)) {
7366 iwl3945_radio_kill_sw(priv, 0);
7368 case RFKILL_STATE_SOFT_BLOCKED:
7369 iwl3945_radio_kill_sw(priv, 1);
7372 IWL_WARN(priv, "received unexpected RFKILL state %d\n", state);
7376 mutex_unlock(&priv->mutex);
7381 int iwl3945_rfkill_init(struct iwl_priv *priv)
7383 struct device *device = wiphy_dev(priv->hw->wiphy);
7386 BUG_ON(device == NULL);
7388 IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
7389 priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
7390 if (!priv->rfkill) {
7391 IWL_ERR(priv, "Unable to allocate rfkill device.\n");
7396 priv->rfkill->name = priv->cfg->name;
7397 priv->rfkill->data = priv;
7398 priv->rfkill->state = RFKILL_STATE_UNBLOCKED;
7399 priv->rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
7400 priv->rfkill->user_claim_unsupported = 1;
7402 priv->rfkill->dev.class->suspend = NULL;
7403 priv->rfkill->dev.class->resume = NULL;
7405 ret = rfkill_register(priv->rfkill);
7407 IWL_ERR(priv, "Unable to register rfkill: %d\n", ret);
7411 IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
7415 if (priv->rfkill != NULL)
7416 rfkill_free(priv->rfkill);
7417 priv->rfkill = NULL;
7420 IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
7424 void iwl3945_rfkill_unregister(struct iwl_priv *priv)
7427 rfkill_unregister(priv->rfkill);
7429 priv->rfkill = NULL;
7432 /* set rf-kill to the right state. */
7433 void iwl3945_rfkill_set_hw_state(struct iwl_priv *priv)
7439 if (iwl_is_rfkill_hw(priv)) {
7440 rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
7444 if (!iwl_is_rfkill_sw(priv))
7445 rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
7447 rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
7451 /*****************************************************************************
7453 * driver and module entry point
7455 *****************************************************************************/
7457 static struct pci_driver iwl3945_driver = {
7459 .id_table = iwl3945_hw_card_ids,
7460 .probe = iwl3945_pci_probe,
7461 .remove = __devexit_p(iwl3945_pci_remove),
7463 .suspend = iwl3945_pci_suspend,
7464 .resume = iwl3945_pci_resume,
7468 static int __init iwl3945_init(void)
7472 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
7473 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
7475 ret = iwl3945_rate_control_register();
7477 printk(KERN_ERR DRV_NAME
7478 "Unable to register rate control algorithm: %d\n", ret);
7482 ret = pci_register_driver(&iwl3945_driver);
7484 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
7485 goto error_register;
7491 iwl3945_rate_control_unregister();
7495 static void __exit iwl3945_exit(void)
7497 pci_unregister_driver(&iwl3945_driver);
7498 iwl3945_rate_control_unregister();
7501 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
7503 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
7504 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
7505 module_param_named(disable, iwl3945_mod_params.disable, int, 0444);
7506 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
7507 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
7508 MODULE_PARM_DESC(swcrypto,
7509 "using software crypto (default 1 [software])\n");
7510 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
7511 MODULE_PARM_DESC(debug, "debug output mask");
7512 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
7513 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
7515 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
7516 MODULE_PARM_DESC(queues_num, "number of hw queues.");
7518 module_exit(iwl3945_exit);
7519 module_init(iwl3945_init);