1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
43 #include <net/ieee80211_radiotap.h>
44 #include <net/lib80211.h>
45 #include <net/mac80211.h>
47 #include <asm/div64.h>
49 #define DRV_NAME "iwl3945"
52 #include "iwl-3945-fh.h"
53 #include "iwl-commands.h"
56 #include "iwl-helpers.h"
61 * module name, copyright, version, etc.
64 #define DRV_DESCRIPTION \
65 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
67 #ifdef CONFIG_IWLWIFI_DEBUG
73 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
79 #define IWL39_VERSION "1.2.26k" VD VS
80 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
81 #define DRV_AUTHOR "<ilw@linux.intel.com>"
82 #define DRV_VERSION IWL39_VERSION
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
88 MODULE_LICENSE("GPL");
90 /* module parameters */
91 struct iwl_mod_params iwl3945_mod_params = {
92 .num_of_queues = IWL39_NUM_QUEUES, /* Not used */
95 /* the rest are 0 by default */
99 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
100 * @priv: eeprom and antenna fields are used to determine antenna flags
102 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
103 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
105 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
106 * IWL_ANTENNA_MAIN - Force MAIN antenna
107 * IWL_ANTENNA_AUX - Force AUX antenna
109 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
111 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
113 switch (iwl3945_mod_params.antenna) {
114 case IWL_ANTENNA_DIVERSITY:
117 case IWL_ANTENNA_MAIN:
118 if (eeprom->antenna_switch_type)
119 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
120 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
122 case IWL_ANTENNA_AUX:
123 if (eeprom->antenna_switch_type)
124 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
125 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
128 /* bad antenna selector value */
129 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
130 iwl3945_mod_params.antenna);
132 return 0; /* "diversity" is default if error */
135 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
136 struct ieee80211_key_conf *keyconf,
140 __le16 key_flags = 0;
143 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
144 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
146 if (sta_id == priv->hw_params.bcast_sta_id)
147 key_flags |= STA_KEY_MULTICAST_MSK;
149 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
150 keyconf->hw_key_idx = keyconf->keyidx;
151 key_flags &= ~STA_KEY_FLG_INVALID;
153 spin_lock_irqsave(&priv->sta_lock, flags);
154 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
155 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
156 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
159 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
162 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
163 == STA_KEY_FLG_NO_ENC)
164 priv->stations[sta_id].sta.key.key_offset =
165 iwl_get_free_ucode_key_index(priv);
166 /* else, we are overriding an existing key => no need to allocated room
169 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
170 "no space for a new key");
172 priv->stations[sta_id].sta.key.key_flags = key_flags;
173 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
174 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
176 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
178 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
180 spin_unlock_irqrestore(&priv->sta_lock, flags);
185 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
186 struct ieee80211_key_conf *keyconf,
192 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
193 struct ieee80211_key_conf *keyconf,
199 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
203 spin_lock_irqsave(&priv->sta_lock, flags);
204 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
205 memset(&priv->stations[sta_id].sta.key, 0,
206 sizeof(struct iwl4965_keyinfo));
207 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
208 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
209 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
210 spin_unlock_irqrestore(&priv->sta_lock, flags);
212 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
213 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
217 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
218 struct ieee80211_key_conf *keyconf, u8 sta_id)
222 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
224 switch (keyconf->alg) {
226 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
229 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
232 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
235 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
239 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
240 keyconf->alg, keyconf->keylen, keyconf->keyidx,
246 static int iwl3945_remove_static_key(struct iwl_priv *priv)
248 int ret = -EOPNOTSUPP;
253 static int iwl3945_set_static_key(struct iwl_priv *priv,
254 struct ieee80211_key_conf *key)
256 if (key->alg == ALG_WEP)
259 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
263 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
265 struct list_head *element;
267 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
270 while (!list_empty(&priv->free_frames)) {
271 element = priv->free_frames.next;
273 kfree(list_entry(element, struct iwl3945_frame, list));
274 priv->frames_count--;
277 if (priv->frames_count) {
278 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
280 priv->frames_count = 0;
284 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
286 struct iwl3945_frame *frame;
287 struct list_head *element;
288 if (list_empty(&priv->free_frames)) {
289 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
291 IWL_ERR(priv, "Could not allocate frame!\n");
295 priv->frames_count++;
299 element = priv->free_frames.next;
301 return list_entry(element, struct iwl3945_frame, list);
304 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
306 memset(frame, 0, sizeof(*frame));
307 list_add(&frame->list, &priv->free_frames);
310 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
311 struct ieee80211_hdr *hdr,
315 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
316 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
317 (priv->iw_mode != NL80211_IFTYPE_AP)))
320 if (priv->ibss_beacon->len > left)
323 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
325 return priv->ibss_beacon->len;
328 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
330 struct iwl3945_frame *frame;
331 unsigned int frame_size;
335 frame = iwl3945_get_free_frame(priv);
338 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
343 rate = iwl_rate_get_lowest_plcp(priv);
345 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
347 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
350 iwl3945_free_frame(priv, frame);
355 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
357 if (priv->shared_virt)
358 pci_free_consistent(priv->pci_dev,
359 sizeof(struct iwl3945_shared),
364 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
365 struct ieee80211_tx_info *info,
366 struct iwl_device_cmd *cmd,
367 struct sk_buff *skb_frag,
370 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
371 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
373 switch (keyinfo->alg) {
375 tx->sec_ctl = TX_CMD_SEC_CCM;
376 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
377 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
384 tx->sec_ctl = TX_CMD_SEC_WEP |
385 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
387 if (keyinfo->keylen == 13)
388 tx->sec_ctl |= TX_CMD_SEC_KEY128;
390 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
392 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
393 "with key %d\n", info->control.hw_key->hw_key_idx);
397 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
403 * handle build REPLY_TX command notification.
405 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
406 struct iwl_device_cmd *cmd,
407 struct ieee80211_tx_info *info,
408 struct ieee80211_hdr *hdr, u8 std_id)
410 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
411 __le32 tx_flags = tx->tx_flags;
412 __le16 fc = hdr->frame_control;
413 u8 rc_flags = info->control.rates[0].flags;
415 tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
416 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
417 tx_flags |= TX_CMD_FLG_ACK_MSK;
418 if (ieee80211_is_mgmt(fc))
419 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
420 if (ieee80211_is_probe_resp(fc) &&
421 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
422 tx_flags |= TX_CMD_FLG_TSF_MSK;
424 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
425 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
429 if (ieee80211_has_morefrags(fc))
430 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
432 if (ieee80211_is_data_qos(fc)) {
433 u8 *qc = ieee80211_get_qos_ctl(hdr);
434 tx->tid_tspec = qc[0] & 0xf;
435 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
437 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
440 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
441 tx_flags |= TX_CMD_FLG_RTS_MSK;
442 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
443 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
444 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
445 tx_flags |= TX_CMD_FLG_CTS_MSK;
448 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
449 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
451 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
452 if (ieee80211_is_mgmt(fc)) {
453 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
454 tx->timeout.pm_frame_timeout = cpu_to_le16(3);
456 tx->timeout.pm_frame_timeout = cpu_to_le16(2);
458 tx->timeout.pm_frame_timeout = 0;
459 #ifdef CONFIG_IWLWIFI_LEDS
460 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
465 tx->tx_flags = tx_flags;
466 tx->next_frame_len = 0;
470 * start REPLY_TX command process
472 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
474 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
475 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
476 struct iwl3945_tx_cmd *tx;
477 struct iwl_tx_queue *txq = NULL;
478 struct iwl_queue *q = NULL;
479 struct iwl_device_cmd *out_cmd;
480 struct iwl_cmd_meta *out_meta;
481 dma_addr_t phys_addr;
482 dma_addr_t txcmd_phys;
483 int txq_id = skb_get_queue_mapping(skb);
484 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
491 u8 wait_write_ptr = 0;
496 spin_lock_irqsave(&priv->lock, flags);
497 if (iwl_is_rfkill(priv)) {
498 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
502 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
503 IWL_ERR(priv, "ERROR: No TX rate available.\n");
507 unicast = !is_multicast_ether_addr(hdr->addr1);
510 fc = hdr->frame_control;
512 #ifdef CONFIG_IWLWIFI_DEBUG
513 if (ieee80211_is_auth(fc))
514 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
515 else if (ieee80211_is_assoc_req(fc))
516 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
517 else if (ieee80211_is_reassoc_req(fc))
518 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
521 /* drop all data frame if we are not associated */
522 if (ieee80211_is_data(fc) &&
523 (!iwl_is_monitor_mode(priv)) && /* packet injection */
524 (!iwl_is_associated(priv) ||
525 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
526 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
530 spin_unlock_irqrestore(&priv->lock, flags);
532 hdr_len = ieee80211_hdrlen(fc);
534 /* Find (or create) index into station table for destination station */
535 sta_id = iwl_get_sta_id(priv, hdr);
536 if (sta_id == IWL_INVALID_STATION) {
537 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
542 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
544 if (ieee80211_is_data_qos(fc)) {
545 qc = ieee80211_get_qos_ctl(hdr);
546 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
547 if (unlikely(tid >= MAX_TID_COUNT))
549 seq_number = priv->stations[sta_id].tid[tid].seq_number &
551 hdr->seq_ctrl = cpu_to_le16(seq_number) |
553 cpu_to_le16(IEEE80211_SCTL_FRAG));
557 /* Descriptor for chosen Tx queue */
558 txq = &priv->txq[txq_id];
561 spin_lock_irqsave(&priv->lock, flags);
563 idx = get_cmd_index(q, q->write_ptr, 0);
565 /* Set up driver data for this TFD */
566 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
567 txq->txb[q->write_ptr].skb[0] = skb;
569 /* Init first empty entry in queue's array of Tx/cmd buffers */
570 out_cmd = txq->cmd[idx];
571 out_meta = &txq->meta[idx];
572 tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
573 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
574 memset(tx, 0, sizeof(*tx));
577 * Set up the Tx-command (not MAC!) header.
578 * Store the chosen Tx queue and TFD index within the sequence field;
579 * after Tx, uCode's Tx response will return this value so driver can
580 * locate the frame within the tx queue and do post-tx processing.
582 out_cmd->hdr.cmd = REPLY_TX;
583 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
584 INDEX_TO_SEQ(q->write_ptr)));
586 /* Copy MAC header from skb into command buffer */
587 memcpy(tx->hdr, hdr, hdr_len);
590 if (info->control.hw_key)
591 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
593 /* TODO need this for burst mode later on */
594 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
596 /* set is_hcca to 0; it probably will never be implemented */
597 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
599 /* Total # bytes to be transmitted */
601 tx->len = cpu_to_le16(len);
603 iwl_dbg_log_tx_data_frame(priv, len, hdr);
604 iwl_update_stats(priv, true, fc, len);
605 tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
606 tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
608 if (!ieee80211_has_morefrags(hdr->frame_control)) {
609 txq->need_update = 1;
611 priv->stations[sta_id].tid[tid].seq_number = seq_number;
614 txq->need_update = 0;
617 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
618 le16_to_cpu(out_cmd->hdr.sequence));
619 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx->tx_flags));
620 iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
621 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
622 ieee80211_hdrlen(fc));
625 * Use the first empty entry in this queue's command buffer array
626 * to contain the Tx command and MAC header concatenated together
627 * (payload data will be in another buffer).
628 * Size of this varies, due to varying MAC header length.
629 * If end is not dword aligned, we'll have 2 extra bytes at the end
630 * of the MAC header (device reads on dword boundaries).
631 * We'll tell device about this padding later.
633 len = sizeof(struct iwl3945_tx_cmd) +
634 sizeof(struct iwl_cmd_header) + hdr_len;
637 len = (len + 3) & ~3;
644 /* Physical address of this Tx command's header (not MAC header!),
645 * within command buffer array. */
646 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
647 len, PCI_DMA_TODEVICE);
648 /* we do not map meta data ... so we can safely access address to
649 * provide to unmap command*/
650 pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
651 pci_unmap_len_set(out_meta, len, len);
653 /* Add buffer containing Tx command and MAC(!) header to TFD's
655 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
656 txcmd_phys, len, 1, 0);
659 /* Set up TFD's 2nd entry to point directly to remainder of skb,
660 * if any (802.11 null frames have no payload). */
661 len = skb->len - hdr_len;
663 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
664 len, PCI_DMA_TODEVICE);
665 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
671 /* Tell device the write index *just past* this latest filled TFD */
672 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
673 rc = iwl_txq_update_write_ptr(priv, txq);
674 spin_unlock_irqrestore(&priv->lock, flags);
679 if ((iwl_queue_space(q) < q->high_mark)
680 && priv->mac80211_registered) {
681 if (wait_write_ptr) {
682 spin_lock_irqsave(&priv->lock, flags);
683 txq->need_update = 1;
684 iwl_txq_update_write_ptr(priv, txq);
685 spin_unlock_irqrestore(&priv->lock, flags);
688 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
694 spin_unlock_irqrestore(&priv->lock, flags);
699 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
701 #include "iwl-spectrum.h"
703 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
704 #define BEACON_TIME_MASK_HIGH 0xFF000000
705 #define TIME_UNIT 1024
708 * extended beacon time format
709 * time in usec will be changed into a 32-bit value in 8:24 format
710 * the high 1 byte is the beacon counts
711 * the lower 3 bytes is the time in usec within one beacon interval
714 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
718 u32 interval = beacon_interval * 1024;
720 if (!interval || !usec)
723 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
724 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
726 return (quot << 24) + rem;
729 /* base is usually what we get from ucode with each received frame,
730 * the same as HW timer counter counting down
733 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
735 u32 base_low = base & BEACON_TIME_MASK_LOW;
736 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
737 u32 interval = beacon_interval * TIME_UNIT;
738 u32 res = (base & BEACON_TIME_MASK_HIGH) +
739 (addon & BEACON_TIME_MASK_HIGH);
741 if (base_low > addon_low)
742 res += base_low - addon_low;
743 else if (base_low < addon_low) {
744 res += interval + base_low - addon_low;
749 return cpu_to_le32(res);
752 static int iwl3945_get_measurement(struct iwl_priv *priv,
753 struct ieee80211_measurement_params *params,
756 struct iwl_spectrum_cmd spectrum;
757 struct iwl_rx_packet *res;
758 struct iwl_host_cmd cmd = {
759 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
760 .data = (void *)&spectrum,
761 .flags = CMD_WANT_SKB,
763 u32 add_time = le64_to_cpu(params->start_time);
765 int spectrum_resp_status;
766 int duration = le16_to_cpu(params->duration);
768 if (iwl_is_associated(priv))
770 iwl3945_usecs_to_beacons(
771 le64_to_cpu(params->start_time) - priv->last_tsf,
772 le16_to_cpu(priv->rxon_timing.beacon_interval));
774 memset(&spectrum, 0, sizeof(spectrum));
776 spectrum.channel_count = cpu_to_le16(1);
778 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
779 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
780 cmd.len = sizeof(spectrum);
781 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
783 if (iwl_is_associated(priv))
784 spectrum.start_time =
785 iwl3945_add_beacon_time(priv->last_beacon_time,
787 le16_to_cpu(priv->rxon_timing.beacon_interval));
789 spectrum.start_time = 0;
791 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
792 spectrum.channels[0].channel = params->channel;
793 spectrum.channels[0].type = type;
794 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
795 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
796 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
798 rc = iwl_send_cmd_sync(priv, &cmd);
802 res = (struct iwl_rx_packet *)cmd.reply_skb->data;
803 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
804 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
808 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
809 switch (spectrum_resp_status) {
810 case 0: /* Command will be handled */
811 if (res->u.spectrum.id != 0xff) {
812 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
814 priv->measurement_status &= ~MEASUREMENT_READY;
816 priv->measurement_status |= MEASUREMENT_ACTIVE;
820 case 1: /* Command will not be handled */
825 dev_kfree_skb_any(cmd.reply_skb);
831 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
832 struct iwl_rx_mem_buffer *rxb)
834 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
835 struct iwl_alive_resp *palive;
836 struct delayed_work *pwork;
838 palive = &pkt->u.alive_frame;
840 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
842 palive->is_valid, palive->ver_type,
843 palive->ver_subtype);
845 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
846 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
847 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
848 sizeof(struct iwl_alive_resp));
849 pwork = &priv->init_alive_start;
851 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
852 memcpy(&priv->card_alive, &pkt->u.alive_frame,
853 sizeof(struct iwl_alive_resp));
854 pwork = &priv->alive_start;
855 iwl3945_disable_events(priv);
858 /* We delay the ALIVE response by 5ms to
859 * give the HW RF Kill time to activate... */
860 if (palive->is_valid == UCODE_VALID_OK)
861 queue_delayed_work(priv->workqueue, pwork,
862 msecs_to_jiffies(5));
864 IWL_WARN(priv, "uCode did not respond OK.\n");
867 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
868 struct iwl_rx_mem_buffer *rxb)
870 #ifdef CONFIG_IWLWIFI_DEBUG
871 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
874 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
878 static void iwl3945_bg_beacon_update(struct work_struct *work)
880 struct iwl_priv *priv =
881 container_of(work, struct iwl_priv, beacon_update);
882 struct sk_buff *beacon;
884 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
885 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
888 IWL_ERR(priv, "update beacon failed\n");
892 mutex_lock(&priv->mutex);
893 /* new beacon skb is allocated every time; dispose previous.*/
894 if (priv->ibss_beacon)
895 dev_kfree_skb(priv->ibss_beacon);
897 priv->ibss_beacon = beacon;
898 mutex_unlock(&priv->mutex);
900 iwl3945_send_beacon_cmd(priv);
903 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
904 struct iwl_rx_mem_buffer *rxb)
906 #ifdef CONFIG_IWLWIFI_DEBUG
907 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
908 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
909 u8 rate = beacon->beacon_notify_hdr.rate;
911 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
912 "tsf %d %d rate %d\n",
913 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
914 beacon->beacon_notify_hdr.failure_frame,
915 le32_to_cpu(beacon->ibss_mgr_status),
916 le32_to_cpu(beacon->high_tsf),
917 le32_to_cpu(beacon->low_tsf), rate);
920 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
921 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
922 queue_work(priv->workqueue, &priv->beacon_update);
925 /* Handle notification from uCode that card's power state is changing
926 * due to software, hardware, or critical temperature RFKILL */
927 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
928 struct iwl_rx_mem_buffer *rxb)
930 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
931 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
932 unsigned long status = priv->status;
934 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
935 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
936 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
938 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
939 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
941 if (flags & HW_CARD_DISABLED)
942 set_bit(STATUS_RF_KILL_HW, &priv->status);
944 clear_bit(STATUS_RF_KILL_HW, &priv->status);
947 iwl_scan_cancel(priv);
949 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
950 test_bit(STATUS_RF_KILL_HW, &priv->status)))
951 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
952 test_bit(STATUS_RF_KILL_HW, &priv->status));
954 wake_up_interruptible(&priv->wait_command_queue);
958 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
960 * Setup the RX handlers for each of the reply types sent from the uCode
963 * This function chains into the hardware specific files for them to setup
964 * any hardware specific handlers as well.
966 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
968 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
969 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
970 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
971 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
972 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
973 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
974 iwl_rx_pm_debug_statistics_notif;
975 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
978 * The same handler is used for both the REPLY to a discrete
979 * statistics request from the host as well as for the periodic
980 * statistics notifications (after received beacons) from the uCode.
982 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
983 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
985 iwl_setup_spectrum_handlers(priv);
986 iwl_setup_rx_scan_handlers(priv);
987 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
989 /* Set up hardware specific Rx handlers */
990 iwl3945_hw_rx_handler_setup(priv);
993 /************************** RX-FUNCTIONS ****************************/
995 * Rx theory of operation
997 * The host allocates 32 DMA target addresses and passes the host address
998 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1002 * The host/firmware share two index registers for managing the Rx buffers.
1004 * The READ index maps to the first position that the firmware may be writing
1005 * to -- the driver can read up to (but not including) this position and get
1007 * The READ index is managed by the firmware once the card is enabled.
1009 * The WRITE index maps to the last position the driver has read from -- the
1010 * position preceding WRITE is the last slot the firmware can place a packet.
1012 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1015 * During initialization, the host sets up the READ queue position to the first
1016 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1018 * When the firmware places a packet in a buffer, it will advance the READ index
1019 * and fire the RX interrupt. The driver can then query the READ index and
1020 * process as many packets as possible, moving the WRITE index forward as it
1021 * resets the Rx queue buffers with new memory.
1023 * The management in the driver is as follows:
1024 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1025 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1026 * to replenish the iwl->rxq->rx_free.
1027 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1028 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1029 * 'processed' and 'read' driver indexes as well)
1030 * + A received packet is processed and handed to the kernel network stack,
1031 * detached from the iwl->rxq. The driver 'processed' index is updated.
1032 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1033 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1034 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1035 * were enough free buffers and RX_STALLED is set it is cleared.
1040 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1041 * iwl3945_rx_queue_restock
1042 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1043 * queue, updates firmware pointers, and updates
1044 * the WRITE index. If insufficient rx_free buffers
1045 * are available, schedules iwl3945_rx_replenish
1047 * -- enable interrupts --
1048 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1049 * READ INDEX, detaching the SKB from the pool.
1050 * Moves the packet buffer from queue to rx_used.
1051 * Calls iwl3945_rx_queue_restock to refill any empty
1058 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1060 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1061 dma_addr_t dma_addr)
1063 return cpu_to_le32((u32)dma_addr);
1067 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1069 * If there are slots in the RX queue that need to be restocked,
1070 * and we have free pre-allocated buffers, fill the ranks as much
1071 * as we can, pulling from rx_free.
1073 * This moves the 'write' index forward to catch up with 'processed', and
1074 * also updates the memory address in the firmware to reference the new
1077 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1079 struct iwl_rx_queue *rxq = &priv->rxq;
1080 struct list_head *element;
1081 struct iwl_rx_mem_buffer *rxb;
1082 unsigned long flags;
1085 spin_lock_irqsave(&rxq->lock, flags);
1086 write = rxq->write & ~0x7;
1087 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1088 /* Get next free Rx buffer, remove from free list */
1089 element = rxq->rx_free.next;
1090 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1093 /* Point to Rx buffer via next RBD in circular buffer */
1094 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1095 rxq->queue[rxq->write] = rxb;
1096 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1099 spin_unlock_irqrestore(&rxq->lock, flags);
1100 /* If the pre-allocated buffer pool is dropping low, schedule to
1102 if (rxq->free_count <= RX_LOW_WATERMARK)
1103 queue_work(priv->workqueue, &priv->rx_replenish);
1106 /* If we've added more space for the firmware to place data, tell it.
1107 * Increment device's write pointer in multiples of 8. */
1108 if ((rxq->write_actual != (rxq->write & ~0x7))
1109 || (abs(rxq->write - rxq->read) > 7)) {
1110 spin_lock_irqsave(&rxq->lock, flags);
1111 rxq->need_update = 1;
1112 spin_unlock_irqrestore(&rxq->lock, flags);
1113 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1122 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1124 * When moving to rx_free an SKB is allocated for the slot.
1126 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1127 * This is called as a scheduled work item (except for during initialization)
1129 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1131 struct iwl_rx_queue *rxq = &priv->rxq;
1132 struct list_head *element;
1133 struct iwl_rx_mem_buffer *rxb;
1134 unsigned long flags;
1137 spin_lock_irqsave(&rxq->lock, flags);
1139 if (list_empty(&rxq->rx_used)) {
1140 spin_unlock_irqrestore(&rxq->lock, flags);
1144 element = rxq->rx_used.next;
1145 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1147 spin_unlock_irqrestore(&rxq->lock, flags);
1149 /* Alloc a new receive buffer */
1151 alloc_skb(priv->hw_params.rx_buf_size,
1154 if (net_ratelimit())
1155 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
1156 /* We don't reschedule replenish work here -- we will
1157 * call the restock method and if it still needs
1158 * more buffers it will schedule replenish */
1162 /* If radiotap head is required, reserve some headroom here.
1163 * The physical head count is a variable rx_stats->phy_count.
1164 * We reserve 4 bytes here. Plus these extra bytes, the
1165 * headroom of the physical head should be enough for the
1166 * radiotap head that iwl3945 supported. See iwl3945_rt.
1168 skb_reserve(rxb->skb, 4);
1170 /* Get physical address of RB/SKB */
1171 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1173 priv->hw_params.rx_buf_size,
1174 PCI_DMA_FROMDEVICE);
1176 spin_lock_irqsave(&rxq->lock, flags);
1177 list_add_tail(&rxb->list, &rxq->rx_free);
1178 priv->alloc_rxb_skb++;
1180 spin_unlock_irqrestore(&rxq->lock, flags);
1184 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1186 unsigned long flags;
1188 spin_lock_irqsave(&rxq->lock, flags);
1189 INIT_LIST_HEAD(&rxq->rx_free);
1190 INIT_LIST_HEAD(&rxq->rx_used);
1191 /* Fill the rx_used queue with _all_ of the Rx buffers */
1192 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1193 /* In the reset function, these buffers may have been allocated
1194 * to an SKB, so we need to unmap and free potential storage */
1195 if (rxq->pool[i].skb != NULL) {
1196 pci_unmap_single(priv->pci_dev,
1197 rxq->pool[i].real_dma_addr,
1198 priv->hw_params.rx_buf_size,
1199 PCI_DMA_FROMDEVICE);
1200 priv->alloc_rxb_skb--;
1201 dev_kfree_skb(rxq->pool[i].skb);
1202 rxq->pool[i].skb = NULL;
1204 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1207 /* Set us so that we have processed and used all buffers, but have
1208 * not restocked the Rx queue with fresh buffers */
1209 rxq->read = rxq->write = 0;
1210 rxq->free_count = 0;
1211 rxq->write_actual = 0;
1212 spin_unlock_irqrestore(&rxq->lock, flags);
1215 void iwl3945_rx_replenish(void *data)
1217 struct iwl_priv *priv = data;
1218 unsigned long flags;
1220 iwl3945_rx_allocate(priv, GFP_KERNEL);
1222 spin_lock_irqsave(&priv->lock, flags);
1223 iwl3945_rx_queue_restock(priv);
1224 spin_unlock_irqrestore(&priv->lock, flags);
1227 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1229 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1231 iwl3945_rx_queue_restock(priv);
1235 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1236 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1237 * This free routine walks the list of POOL entries and if SKB is set to
1238 * non NULL it is unmapped and freed
1240 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1243 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1244 if (rxq->pool[i].skb != NULL) {
1245 pci_unmap_single(priv->pci_dev,
1246 rxq->pool[i].real_dma_addr,
1247 priv->hw_params.rx_buf_size,
1248 PCI_DMA_FROMDEVICE);
1249 dev_kfree_skb(rxq->pool[i].skb);
1253 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1255 pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1256 rxq->rb_stts, rxq->rb_stts_dma);
1258 rxq->rb_stts = NULL;
1262 /* Convert linear signal-to-noise ratio into dB */
1263 static u8 ratio2dB[100] = {
1264 /* 0 1 2 3 4 5 6 7 8 9 */
1265 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1266 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1267 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1268 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1269 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1270 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1271 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1272 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1273 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1274 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1277 /* Calculates a relative dB value from a ratio of linear
1278 * (i.e. not dB) signal levels.
1279 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1280 int iwl3945_calc_db_from_ratio(int sig_ratio)
1282 /* 1000:1 or higher just report as 60 dB */
1283 if (sig_ratio >= 1000)
1286 /* 100:1 or higher, divide by 10 and use table,
1287 * add 20 dB to make up for divide by 10 */
1288 if (sig_ratio >= 100)
1289 return 20 + (int)ratio2dB[sig_ratio/10];
1291 /* We shouldn't see this */
1295 /* Use table for ratios 1:1 - 99:1 */
1296 return (int)ratio2dB[sig_ratio];
1299 #define PERFECT_RSSI (-20) /* dBm */
1300 #define WORST_RSSI (-95) /* dBm */
1301 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1303 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1304 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1305 * about formulas used below. */
1306 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1309 int degradation = PERFECT_RSSI - rssi_dbm;
1311 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1312 * as indicator; formula is (signal dbm - noise dbm).
1313 * SNR at or above 40 is a great signal (100%).
1314 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1315 * Weakest usable signal is usually 10 - 15 dB SNR. */
1317 if (rssi_dbm - noise_dbm >= 40)
1319 else if (rssi_dbm < noise_dbm)
1321 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1323 /* Else use just the signal level.
1324 * This formula is a least squares fit of data points collected and
1325 * compared with a reference system that had a percentage (%) display
1326 * for signal quality. */
1328 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1329 (15 * RSSI_RANGE + 62 * degradation)) /
1330 (RSSI_RANGE * RSSI_RANGE);
1334 else if (sig_qual < 1)
1341 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1343 * Uses the priv->rx_handlers callback function array to invoke
1344 * the appropriate handlers, including command responses,
1345 * frame-received notifications, and other notifications.
1347 static void iwl3945_rx_handle(struct iwl_priv *priv)
1349 struct iwl_rx_mem_buffer *rxb;
1350 struct iwl_rx_packet *pkt;
1351 struct iwl_rx_queue *rxq = &priv->rxq;
1354 unsigned long flags;
1357 int total_empty = 0;
1359 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1360 * buffer that the driver may process (last buffer filled by ucode). */
1361 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1364 /* calculate total frames need to be restock after handling RX */
1365 total_empty = r - priv->rxq.write_actual;
1366 if (total_empty < 0)
1367 total_empty += RX_QUEUE_SIZE;
1369 if (total_empty > (RX_QUEUE_SIZE / 2))
1371 /* Rx interrupt, but nothing sent from uCode */
1373 IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
1376 rxb = rxq->queue[i];
1378 /* If an RXB doesn't have a Rx queue slot associated with it,
1379 * then a bug has been introduced in the queue refilling
1380 * routines -- catch it here */
1381 BUG_ON(rxb == NULL);
1383 rxq->queue[i] = NULL;
1385 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1386 priv->hw_params.rx_buf_size,
1387 PCI_DMA_FROMDEVICE);
1388 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1390 /* Reclaim a command buffer only if this packet is a response
1391 * to a (driver-originated) command.
1392 * If the packet (e.g. Rx frame) originated from uCode,
1393 * there is no command buffer to reclaim.
1394 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1395 * but apparently a few don't get set; catch them here. */
1396 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1397 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1398 (pkt->hdr.cmd != REPLY_TX);
1400 /* Based on type of command response or notification,
1401 * handle those that need handling via function in
1402 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1403 if (priv->rx_handlers[pkt->hdr.cmd]) {
1404 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1405 "r = %d, i = %d, %s, 0x%02x\n", r, i,
1406 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1407 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1408 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1410 /* No handling needed */
1411 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1412 "r %d i %d No handler needed for %s, 0x%02x\n",
1413 r, i, get_cmd_string(pkt->hdr.cmd),
1418 /* Invoke any callbacks, transfer the skb to caller, and
1419 * fire off the (possibly) blocking iwl_send_cmd()
1420 * as we reclaim the driver command queue */
1421 if (rxb && rxb->skb)
1422 iwl_tx_cmd_complete(priv, rxb);
1424 IWL_WARN(priv, "Claim null rxb?\n");
1427 /* For now we just don't re-use anything. We can tweak this
1428 * later to try and re-use notification packets and SKBs that
1429 * fail to Rx correctly */
1430 if (rxb->skb != NULL) {
1431 priv->alloc_rxb_skb--;
1432 dev_kfree_skb_any(rxb->skb);
1436 spin_lock_irqsave(&rxq->lock, flags);
1437 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1438 spin_unlock_irqrestore(&rxq->lock, flags);
1439 i = (i + 1) & RX_QUEUE_MASK;
1440 /* If there are a lot of unused frames,
1441 * restock the Rx queue so ucode won't assert. */
1446 iwl3945_rx_replenish_now(priv);
1452 /* Backtrack one entry */
1455 iwl3945_rx_replenish_now(priv);
1457 iwl3945_rx_queue_restock(priv);
1460 /* call this function to flush any scheduled tasklet */
1461 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1463 /* wait to make sure we flush pending tasklet*/
1464 synchronize_irq(priv->pci_dev->irq);
1465 tasklet_kill(&priv->irq_tasklet);
1468 static const char *desc_lookup(int i)
1476 return "BAD_CHECKSUM";
1478 return "NMI_INTERRUPT";
1482 return "FATAL_ERROR";
1488 #define ERROR_START_OFFSET (1 * sizeof(u32))
1489 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1491 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1494 u32 desc, time, count, base, data1;
1495 u32 blink1, blink2, ilink1, ilink2;
1497 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1499 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1500 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1505 count = iwl_read_targ_mem(priv, base);
1507 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1508 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1509 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1510 priv->status, count);
1513 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1514 "ilink1 nmiPC Line\n");
1515 for (i = ERROR_START_OFFSET;
1516 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1517 i += ERROR_ELEM_SIZE) {
1518 desc = iwl_read_targ_mem(priv, base + i);
1520 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1522 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1524 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1526 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1528 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1530 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1533 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1534 desc_lookup(desc), desc, time, blink1, blink2,
1535 ilink1, ilink2, data1);
1540 #define EVENT_START_OFFSET (6 * sizeof(u32))
1543 * iwl3945_print_event_log - Dump error event log to syslog
1546 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1547 u32 num_events, u32 mode)
1550 u32 base; /* SRAM byte address of event log header */
1551 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1552 u32 ptr; /* SRAM byte address of log data */
1553 u32 ev, time, data; /* event log data */
1555 if (num_events == 0)
1558 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1561 event_size = 2 * sizeof(u32);
1563 event_size = 3 * sizeof(u32);
1565 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1567 /* "time" is actually "data" for mode 0 (no timestamp).
1568 * place event id # at far right for easier visual parsing. */
1569 for (i = 0; i < num_events; i++) {
1570 ev = iwl_read_targ_mem(priv, ptr);
1572 time = iwl_read_targ_mem(priv, ptr);
1576 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1578 data = iwl_read_targ_mem(priv, ptr);
1580 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1585 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1587 u32 base; /* SRAM byte address of event log header */
1588 u32 capacity; /* event log capacity in # entries */
1589 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1590 u32 num_wraps; /* # times uCode wrapped to top of log */
1591 u32 next_entry; /* index of next entry to be written by uCode */
1592 u32 size; /* # entries that we'll print */
1594 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1595 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1596 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1600 /* event log header */
1601 capacity = iwl_read_targ_mem(priv, base);
1602 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1603 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1604 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1606 size = num_wraps ? capacity : next_entry;
1608 /* bail out if nothing in log */
1610 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1614 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1617 /* if uCode has wrapped back to top of log, start at the oldest entry,
1618 * i.e the next one that uCode would fill. */
1620 iwl3945_print_event_log(priv, next_entry,
1621 capacity - next_entry, mode);
1623 /* (then/else) start at top of log */
1624 iwl3945_print_event_log(priv, 0, next_entry, mode);
1628 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1630 u32 inta, handled = 0;
1632 unsigned long flags;
1633 #ifdef CONFIG_IWLWIFI_DEBUG
1637 spin_lock_irqsave(&priv->lock, flags);
1639 /* Ack/clear/reset pending uCode interrupts.
1640 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1641 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1642 inta = iwl_read32(priv, CSR_INT);
1643 iwl_write32(priv, CSR_INT, inta);
1645 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1646 * Any new interrupts that happen after this, either while we're
1647 * in this tasklet, or later, will show up in next ISR/tasklet. */
1648 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1649 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1651 #ifdef CONFIG_IWLWIFI_DEBUG
1652 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1653 /* just for debug */
1654 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1655 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1656 inta, inta_mask, inta_fh);
1660 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1661 * atomic, make sure that inta covers all the interrupts that
1662 * we've discovered, even if FH interrupt came in just after
1663 * reading CSR_INT. */
1664 if (inta_fh & CSR39_FH_INT_RX_MASK)
1665 inta |= CSR_INT_BIT_FH_RX;
1666 if (inta_fh & CSR39_FH_INT_TX_MASK)
1667 inta |= CSR_INT_BIT_FH_TX;
1669 /* Now service all interrupt bits discovered above. */
1670 if (inta & CSR_INT_BIT_HW_ERR) {
1671 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1673 /* Tell the device to stop sending interrupts */
1674 iwl_disable_interrupts(priv);
1676 priv->isr_stats.hw++;
1677 iwl_irq_handle_error(priv);
1679 handled |= CSR_INT_BIT_HW_ERR;
1681 spin_unlock_irqrestore(&priv->lock, flags);
1686 #ifdef CONFIG_IWLWIFI_DEBUG
1687 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1688 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1689 if (inta & CSR_INT_BIT_SCD) {
1690 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1691 "the frame/frames.\n");
1692 priv->isr_stats.sch++;
1695 /* Alive notification via Rx interrupt will do the real work */
1696 if (inta & CSR_INT_BIT_ALIVE) {
1697 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1698 priv->isr_stats.alive++;
1702 /* Safely ignore these bits for debug checks below */
1703 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1705 /* Error detected by uCode */
1706 if (inta & CSR_INT_BIT_SW_ERR) {
1707 IWL_ERR(priv, "Microcode SW error detected. "
1708 "Restarting 0x%X.\n", inta);
1709 priv->isr_stats.sw++;
1710 priv->isr_stats.sw_err = inta;
1711 iwl_irq_handle_error(priv);
1712 handled |= CSR_INT_BIT_SW_ERR;
1715 /* uCode wakes up after power-down sleep */
1716 if (inta & CSR_INT_BIT_WAKEUP) {
1717 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1718 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1719 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1720 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1721 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1722 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1723 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1724 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1726 priv->isr_stats.wakeup++;
1727 handled |= CSR_INT_BIT_WAKEUP;
1730 /* All uCode command responses, including Tx command responses,
1731 * Rx "responses" (frame-received notification), and other
1732 * notifications from uCode come through here*/
1733 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1734 iwl3945_rx_handle(priv);
1735 priv->isr_stats.rx++;
1736 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1739 if (inta & CSR_INT_BIT_FH_TX) {
1740 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1741 priv->isr_stats.tx++;
1743 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1744 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1745 (FH39_SRVC_CHNL), 0x0);
1746 handled |= CSR_INT_BIT_FH_TX;
1749 if (inta & ~handled) {
1750 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1751 priv->isr_stats.unhandled++;
1754 if (inta & ~priv->inta_mask) {
1755 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1756 inta & ~priv->inta_mask);
1757 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1760 /* Re-enable all interrupts */
1761 /* only Re-enable if disabled by irq */
1762 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1763 iwl_enable_interrupts(priv);
1765 #ifdef CONFIG_IWLWIFI_DEBUG
1766 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1767 inta = iwl_read32(priv, CSR_INT);
1768 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1769 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1770 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1771 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1774 spin_unlock_irqrestore(&priv->lock, flags);
1777 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1778 enum ieee80211_band band,
1779 u8 is_active, u8 n_probes,
1780 struct iwl3945_scan_channel *scan_ch)
1782 struct ieee80211_channel *chan;
1783 const struct ieee80211_supported_band *sband;
1784 const struct iwl_channel_info *ch_info;
1785 u16 passive_dwell = 0;
1786 u16 active_dwell = 0;
1789 sband = iwl_get_hw_mode(priv, band);
1793 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1794 passive_dwell = iwl_get_passive_dwell_time(priv, band);
1796 if (passive_dwell <= active_dwell)
1797 passive_dwell = active_dwell + 1;
1799 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1800 chan = priv->scan_request->channels[i];
1802 if (chan->band != band)
1805 scan_ch->channel = chan->hw_value;
1807 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1808 if (!is_channel_valid(ch_info)) {
1809 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1814 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1815 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1816 /* If passive , set up for auto-switch
1817 * and use long active_dwell time.
1819 if (!is_active || is_channel_passive(ch_info) ||
1820 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1821 scan_ch->type = 0; /* passive */
1822 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1823 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1825 scan_ch->type = 1; /* active */
1828 /* Set direct probe bits. These may be used both for active
1829 * scan channels (probes gets sent right away),
1830 * or for passive channels (probes get se sent only after
1831 * hearing clear Rx packet).*/
1832 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1834 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1836 /* uCode v1 does not allow setting direct probe bits on
1837 * passive channel. */
1838 if ((scan_ch->type & 1) && n_probes)
1839 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1842 /* Set txpower levels to defaults */
1843 scan_ch->tpc.dsp_atten = 110;
1844 /* scan_pwr_info->tpc.dsp_atten; */
1846 /*scan_pwr_info->tpc.tx_gain; */
1847 if (band == IEEE80211_BAND_5GHZ)
1848 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1850 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1851 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1853 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1857 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1859 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1860 (scan_ch->type & 1) ?
1861 active_dwell : passive_dwell);
1867 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
1871 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1872 struct ieee80211_rate *rates)
1876 for (i = 0; i < IWL_RATE_COUNT; i++) {
1877 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1878 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1879 rates[i].hw_value_short = i;
1881 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1883 * If CCK != 1M then set short preamble rate flag.
1885 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1886 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1891 /******************************************************************************
1893 * uCode download functions
1895 ******************************************************************************/
1897 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1899 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1900 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1901 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1902 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1903 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1904 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1908 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1909 * looking at all data.
1911 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1918 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1920 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1921 IWL39_RTC_INST_LOWER_BOUND);
1924 for (; len > 0; len -= sizeof(u32), image++) {
1925 /* read data comes through single port, auto-incr addr */
1926 /* NOTE: Use the debugless read so we don't flood kernel log
1927 * if IWL_DL_IO is set */
1928 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1929 if (val != le32_to_cpu(*image)) {
1930 IWL_ERR(priv, "uCode INST section is invalid at "
1931 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1932 save_len - len, val, le32_to_cpu(*image));
1942 IWL_DEBUG_INFO(priv,
1943 "ucode image in INSTRUCTION memory is good\n");
1950 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1951 * using sample data 100 bytes apart. If these sample points are good,
1952 * it's a pretty good bet that everything between them is good, too.
1954 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1961 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1963 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1964 /* read data comes through single port, auto-incr addr */
1965 /* NOTE: Use the debugless read so we don't flood kernel log
1966 * if IWL_DL_IO is set */
1967 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1968 i + IWL39_RTC_INST_LOWER_BOUND);
1969 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1970 if (val != le32_to_cpu(*image)) {
1971 #if 0 /* Enable this if you want to see details */
1972 IWL_ERR(priv, "uCode INST section is invalid at "
1973 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1988 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
1989 * and verify its contents
1991 static int iwl3945_verify_ucode(struct iwl_priv *priv)
1998 image = (__le32 *)priv->ucode_boot.v_addr;
1999 len = priv->ucode_boot.len;
2000 rc = iwl3945_verify_inst_sparse(priv, image, len);
2002 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2006 /* Try initialize */
2007 image = (__le32 *)priv->ucode_init.v_addr;
2008 len = priv->ucode_init.len;
2009 rc = iwl3945_verify_inst_sparse(priv, image, len);
2011 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2015 /* Try runtime/protocol */
2016 image = (__le32 *)priv->ucode_code.v_addr;
2017 len = priv->ucode_code.len;
2018 rc = iwl3945_verify_inst_sparse(priv, image, len);
2020 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2024 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2026 /* Since nothing seems to match, show first several data entries in
2027 * instruction SRAM, so maybe visual inspection will give a clue.
2028 * Selection of bootstrap image (vs. other images) is arbitrary. */
2029 image = (__le32 *)priv->ucode_boot.v_addr;
2030 len = priv->ucode_boot.len;
2031 rc = iwl3945_verify_inst_full(priv, image, len);
2036 static void iwl3945_nic_start(struct iwl_priv *priv)
2038 /* Remove all resets to allow NIC to operate */
2039 iwl_write32(priv, CSR_RESET, 0);
2043 * iwl3945_read_ucode - Read uCode images from disk file.
2045 * Copy into buffers for card to fetch via bus-mastering
2047 static int iwl3945_read_ucode(struct iwl_priv *priv)
2049 const struct iwl_ucode_header *ucode;
2050 int ret = -EINVAL, index;
2051 const struct firmware *ucode_raw;
2052 /* firmware file name contains uCode/driver compatibility version */
2053 const char *name_pre = priv->cfg->fw_name_pre;
2054 const unsigned int api_max = priv->cfg->ucode_api_max;
2055 const unsigned int api_min = priv->cfg->ucode_api_min;
2059 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2061 /* Ask kernel firmware_class module to get the boot firmware off disk.
2062 * request_firmware() is synchronous, file is in memory on return. */
2063 for (index = api_max; index >= api_min; index--) {
2064 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2065 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2067 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2074 if (index < api_max)
2075 IWL_ERR(priv, "Loaded firmware %s, "
2076 "which is deprecated. "
2077 " Please use API v%u instead.\n",
2079 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2080 "(%zd bytes) from disk\n",
2081 buf, ucode_raw->size);
2089 /* Make sure that we got at least our header! */
2090 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
2091 IWL_ERR(priv, "File size way too small!\n");
2096 /* Data from ucode file: header followed by uCode images */
2097 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2099 priv->ucode_ver = le32_to_cpu(ucode->ver);
2100 api_ver = IWL_UCODE_API(priv->ucode_ver);
2101 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
2102 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
2103 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
2105 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
2106 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
2107 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
2109 /* api_ver should match the api version forming part of the
2110 * firmware filename ... but we don't check for that and only rely
2111 * on the API version read from firmware header from here on forward */
2113 if (api_ver < api_min || api_ver > api_max) {
2114 IWL_ERR(priv, "Driver unable to support your firmware API. "
2115 "Driver supports v%u, firmware is v%u.\n",
2117 priv->ucode_ver = 0;
2121 if (api_ver != api_max)
2122 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2123 "got %u. New firmware can be obtained "
2124 "from http://www.intellinuxwireless.org.\n",
2127 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2128 IWL_UCODE_MAJOR(priv->ucode_ver),
2129 IWL_UCODE_MINOR(priv->ucode_ver),
2130 IWL_UCODE_API(priv->ucode_ver),
2131 IWL_UCODE_SERIAL(priv->ucode_ver));
2133 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2135 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2137 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2139 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2141 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2143 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2147 /* Verify size of file vs. image size info in file's header */
2148 if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) +
2149 inst_size + data_size + init_size +
2150 init_data_size + boot_size) {
2152 IWL_DEBUG_INFO(priv,
2153 "uCode file size %zd does not match expected size\n",
2159 /* Verify that uCode images will fit in card's SRAM */
2160 if (inst_size > IWL39_MAX_INST_SIZE) {
2161 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2167 if (data_size > IWL39_MAX_DATA_SIZE) {
2168 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2173 if (init_size > IWL39_MAX_INST_SIZE) {
2174 IWL_DEBUG_INFO(priv,
2175 "uCode init instr len %d too large to fit in\n",
2180 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2181 IWL_DEBUG_INFO(priv,
2182 "uCode init data len %d too large to fit in\n",
2187 if (boot_size > IWL39_MAX_BSM_SIZE) {
2188 IWL_DEBUG_INFO(priv,
2189 "uCode boot instr len %d too large to fit in\n",
2195 /* Allocate ucode buffers for card's bus-master loading ... */
2197 /* Runtime instructions and 2 copies of data:
2198 * 1) unmodified from disk
2199 * 2) backup cache for save/restore during power-downs */
2200 priv->ucode_code.len = inst_size;
2201 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2203 priv->ucode_data.len = data_size;
2204 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2206 priv->ucode_data_backup.len = data_size;
2207 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2209 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2210 !priv->ucode_data_backup.v_addr)
2213 /* Initialization instructions and data */
2214 if (init_size && init_data_size) {
2215 priv->ucode_init.len = init_size;
2216 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2218 priv->ucode_init_data.len = init_data_size;
2219 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2221 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2225 /* Bootstrap (instructions only, no data) */
2227 priv->ucode_boot.len = boot_size;
2228 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2230 if (!priv->ucode_boot.v_addr)
2234 /* Copy images into buffers for card's bus-master reads ... */
2236 /* Runtime instructions (first block of data in file) */
2238 IWL_DEBUG_INFO(priv,
2239 "Copying (but not loading) uCode instr len %zd\n", len);
2240 memcpy(priv->ucode_code.v_addr, src, len);
2243 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2244 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2246 /* Runtime data (2nd block)
2247 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2249 IWL_DEBUG_INFO(priv,
2250 "Copying (but not loading) uCode data len %zd\n", len);
2251 memcpy(priv->ucode_data.v_addr, src, len);
2252 memcpy(priv->ucode_data_backup.v_addr, src, len);
2255 /* Initialization instructions (3rd block) */
2258 IWL_DEBUG_INFO(priv,
2259 "Copying (but not loading) init instr len %zd\n", len);
2260 memcpy(priv->ucode_init.v_addr, src, len);
2264 /* Initialization data (4th block) */
2265 if (init_data_size) {
2266 len = init_data_size;
2267 IWL_DEBUG_INFO(priv,
2268 "Copying (but not loading) init data len %zd\n", len);
2269 memcpy(priv->ucode_init_data.v_addr, src, len);
2273 /* Bootstrap instructions (5th block) */
2275 IWL_DEBUG_INFO(priv,
2276 "Copying (but not loading) boot instr len %zd\n", len);
2277 memcpy(priv->ucode_boot.v_addr, src, len);
2279 /* We have our copies now, allow OS release its copies */
2280 release_firmware(ucode_raw);
2284 IWL_ERR(priv, "failed to allocate pci memory\n");
2286 iwl3945_dealloc_ucode_pci(priv);
2289 release_firmware(ucode_raw);
2297 * iwl3945_set_ucode_ptrs - Set uCode address location
2299 * Tell initialization uCode where to find runtime uCode.
2301 * BSM registers initially contain pointers to initialization uCode.
2302 * We need to replace them to load runtime uCode inst and data,
2303 * and to save runtime data when powering down.
2305 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2310 /* bits 31:0 for 3945 */
2311 pinst = priv->ucode_code.p_addr;
2312 pdata = priv->ucode_data_backup.p_addr;
2314 /* Tell bootstrap uCode where to find image to load */
2315 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2316 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2317 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2318 priv->ucode_data.len);
2320 /* Inst byte count must be last to set up, bit 31 signals uCode
2321 * that all new ptr/size info is in place */
2322 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2323 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2325 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2331 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2333 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2335 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2337 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2339 /* Check alive response for "valid" sign from uCode */
2340 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2341 /* We had an error bringing up the hardware, so take it
2342 * all the way back down so we can try again */
2343 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2347 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2348 * This is a paranoid check, because we would not have gotten the
2349 * "initialize" alive if code weren't properly loaded. */
2350 if (iwl3945_verify_ucode(priv)) {
2351 /* Runtime instruction load was bad;
2352 * take it all the way back down so we can try again */
2353 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2357 /* Send pointers to protocol/runtime uCode image ... init code will
2358 * load and launch runtime uCode, which will send us another "Alive"
2360 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2361 if (iwl3945_set_ucode_ptrs(priv)) {
2362 /* Runtime instruction load won't happen;
2363 * take it all the way back down so we can try again */
2364 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2370 queue_work(priv->workqueue, &priv->restart);
2374 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2375 * from protocol/runtime uCode (initialization uCode's
2376 * Alive gets handled by iwl3945_init_alive_start()).
2378 static void iwl3945_alive_start(struct iwl_priv *priv)
2380 int thermal_spin = 0;
2383 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2385 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2386 /* We had an error bringing up the hardware, so take it
2387 * all the way back down so we can try again */
2388 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2392 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2393 * This is a paranoid check, because we would not have gotten the
2394 * "runtime" alive if code weren't properly loaded. */
2395 if (iwl3945_verify_ucode(priv)) {
2396 /* Runtime instruction load was bad;
2397 * take it all the way back down so we can try again */
2398 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2402 iwl_clear_stations_table(priv);
2404 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2405 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2408 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2409 /* if RFKILL is not on, then wait for thermal
2410 * sensor in adapter to kick in */
2411 while (iwl3945_hw_get_temperature(priv) == 0) {
2417 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2420 set_bit(STATUS_RF_KILL_HW, &priv->status);
2422 /* After the ALIVE response, we can send commands to 3945 uCode */
2423 set_bit(STATUS_ALIVE, &priv->status);
2425 if (iwl_is_rfkill(priv))
2428 ieee80211_wake_queues(priv->hw);
2430 priv->active_rate = priv->rates_mask;
2431 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2433 iwl_power_update_mode(priv, false);
2435 if (iwl_is_associated(priv)) {
2436 struct iwl3945_rxon_cmd *active_rxon =
2437 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2439 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2440 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2442 /* Initialize our rx_config data */
2443 iwl_connection_init_rx_config(priv, priv->iw_mode);
2446 /* Configure Bluetooth device coexistence support */
2447 iwl_send_bt_config(priv);
2449 /* Configure the adapter for unassociated operation */
2450 iwlcore_commit_rxon(priv);
2452 iwl3945_reg_txpower_periodic(priv);
2454 iwl3945_led_register(priv);
2456 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2457 set_bit(STATUS_READY, &priv->status);
2458 wake_up_interruptible(&priv->wait_command_queue);
2460 /* reassociate for ADHOC mode */
2461 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2462 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2465 iwl_mac_beacon_update(priv->hw, beacon);
2468 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2469 iwl_set_mode(priv, priv->iw_mode);
2474 queue_work(priv->workqueue, &priv->restart);
2477 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2479 static void __iwl3945_down(struct iwl_priv *priv)
2481 unsigned long flags;
2482 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2483 struct ieee80211_conf *conf = NULL;
2485 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2487 conf = ieee80211_get_hw_conf(priv->hw);
2490 set_bit(STATUS_EXIT_PENDING, &priv->status);
2492 iwl3945_led_unregister(priv);
2493 iwl_clear_stations_table(priv);
2495 /* Unblock any waiting calls */
2496 wake_up_interruptible_all(&priv->wait_command_queue);
2498 /* Wipe out the EXIT_PENDING status bit if we are not actually
2499 * exiting the module */
2501 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2503 /* stop and reset the on-board processor */
2504 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2506 /* tell the device to stop sending interrupts */
2507 spin_lock_irqsave(&priv->lock, flags);
2508 iwl_disable_interrupts(priv);
2509 spin_unlock_irqrestore(&priv->lock, flags);
2510 iwl_synchronize_irq(priv);
2512 if (priv->mac80211_registered)
2513 ieee80211_stop_queues(priv->hw);
2515 /* If we have not previously called iwl3945_init() then
2516 * clear all bits but the RF Kill bits and return */
2517 if (!iwl_is_init(priv)) {
2518 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2520 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2521 STATUS_GEO_CONFIGURED |
2522 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2523 STATUS_EXIT_PENDING;
2527 /* ...otherwise clear out all the status bits but the RF Kill
2528 * bit and continue taking the NIC down. */
2529 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2531 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2532 STATUS_GEO_CONFIGURED |
2533 test_bit(STATUS_FW_ERROR, &priv->status) <<
2535 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2536 STATUS_EXIT_PENDING;
2538 priv->cfg->ops->lib->apm_ops.reset(priv);
2539 spin_lock_irqsave(&priv->lock, flags);
2540 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2541 spin_unlock_irqrestore(&priv->lock, flags);
2543 iwl3945_hw_txq_ctx_stop(priv);
2544 iwl3945_hw_rxq_stop(priv);
2546 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2547 APMG_CLK_VAL_DMA_CLK_RQT);
2552 priv->cfg->ops->lib->apm_ops.stop(priv);
2554 priv->cfg->ops->lib->apm_ops.reset(priv);
2557 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2559 if (priv->ibss_beacon)
2560 dev_kfree_skb(priv->ibss_beacon);
2561 priv->ibss_beacon = NULL;
2563 /* clear out any free frames */
2564 iwl3945_clear_free_frames(priv);
2567 static void iwl3945_down(struct iwl_priv *priv)
2569 mutex_lock(&priv->mutex);
2570 __iwl3945_down(priv);
2571 mutex_unlock(&priv->mutex);
2573 iwl3945_cancel_deferred_work(priv);
2576 #define MAX_HW_RESTARTS 5
2578 static int __iwl3945_up(struct iwl_priv *priv)
2582 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2583 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2587 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2588 IWL_ERR(priv, "ucode not available for device bring up\n");
2592 /* If platform's RF_KILL switch is NOT set to KILL */
2593 if (iwl_read32(priv, CSR_GP_CNTRL) &
2594 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2595 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2597 set_bit(STATUS_RF_KILL_HW, &priv->status);
2598 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2602 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2604 rc = iwl3945_hw_nic_init(priv);
2606 IWL_ERR(priv, "Unable to int nic\n");
2610 /* make sure rfkill handshake bits are cleared */
2611 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2612 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2613 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2615 /* clear (again), then enable host interrupts */
2616 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2617 iwl_enable_interrupts(priv);
2619 /* really make sure rfkill handshake bits are cleared */
2620 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2621 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2623 /* Copy original ucode data image from disk into backup cache.
2624 * This will be used to initialize the on-board processor's
2625 * data SRAM for a clean start when the runtime program first loads. */
2626 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2627 priv->ucode_data.len);
2629 /* We return success when we resume from suspend and rf_kill is on. */
2630 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2633 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2635 iwl_clear_stations_table(priv);
2637 /* load bootstrap state machine,
2638 * load bootstrap program into processor's memory,
2639 * prepare to load the "initialize" uCode */
2640 priv->cfg->ops->lib->load_ucode(priv);
2644 "Unable to set up bootstrap uCode: %d\n", rc);
2648 /* start card; "initialize" will load runtime ucode */
2649 iwl3945_nic_start(priv);
2651 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2656 set_bit(STATUS_EXIT_PENDING, &priv->status);
2657 __iwl3945_down(priv);
2658 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2660 /* tried to restart and config the device for as long as our
2661 * patience could withstand */
2662 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2667 /*****************************************************************************
2669 * Workqueue callbacks
2671 *****************************************************************************/
2673 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2675 struct iwl_priv *priv =
2676 container_of(data, struct iwl_priv, init_alive_start.work);
2678 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2681 mutex_lock(&priv->mutex);
2682 iwl3945_init_alive_start(priv);
2683 mutex_unlock(&priv->mutex);
2686 static void iwl3945_bg_alive_start(struct work_struct *data)
2688 struct iwl_priv *priv =
2689 container_of(data, struct iwl_priv, alive_start.work);
2691 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2694 mutex_lock(&priv->mutex);
2695 iwl3945_alive_start(priv);
2696 mutex_unlock(&priv->mutex);
2699 static void iwl3945_rfkill_poll(struct work_struct *data)
2701 struct iwl_priv *priv =
2702 container_of(data, struct iwl_priv, rfkill_poll.work);
2704 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2705 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2707 set_bit(STATUS_RF_KILL_HW, &priv->status);
2709 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
2710 test_bit(STATUS_RF_KILL_HW, &priv->status));
2712 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2713 round_jiffies_relative(2 * HZ));
2717 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2718 static void iwl3945_bg_request_scan(struct work_struct *data)
2720 struct iwl_priv *priv =
2721 container_of(data, struct iwl_priv, request_scan);
2722 struct iwl_host_cmd cmd = {
2723 .id = REPLY_SCAN_CMD,
2724 .len = sizeof(struct iwl3945_scan_cmd),
2725 .flags = CMD_SIZE_HUGE,
2728 struct iwl3945_scan_cmd *scan;
2729 struct ieee80211_conf *conf = NULL;
2731 enum ieee80211_band band;
2732 bool is_active = false;
2734 conf = ieee80211_get_hw_conf(priv->hw);
2736 mutex_lock(&priv->mutex);
2738 cancel_delayed_work(&priv->scan_check);
2740 if (!iwl_is_ready(priv)) {
2741 IWL_WARN(priv, "request scan called when driver not ready.\n");
2745 /* Make sure the scan wasn't canceled before this queued work
2746 * was given the chance to run... */
2747 if (!test_bit(STATUS_SCANNING, &priv->status))
2750 /* This should never be called or scheduled if there is currently
2751 * a scan active in the hardware. */
2752 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2753 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2754 "Ignoring second request.\n");
2759 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2760 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2764 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2766 "Scan request while abort pending. Queuing.\n");
2770 if (iwl_is_rfkill(priv)) {
2771 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2775 if (!test_bit(STATUS_READY, &priv->status)) {
2777 "Scan request while uninitialized. Queuing.\n");
2781 if (!priv->scan_bands) {
2782 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2787 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2788 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2795 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2797 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2798 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2800 if (iwl_is_associated(priv)) {
2803 u32 suspend_time = 100;
2804 u32 scan_suspend_time = 100;
2805 unsigned long flags;
2807 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2809 spin_lock_irqsave(&priv->lock, flags);
2810 interval = priv->beacon_int;
2811 spin_unlock_irqrestore(&priv->lock, flags);
2813 scan->suspend_time = 0;
2814 scan->max_out_time = cpu_to_le32(200 * 1024);
2816 interval = suspend_time;
2818 * suspend time format:
2819 * 0-19: beacon interval in usec (time before exec.)
2821 * 24-31: number of beacons (suspend between channels)
2824 extra = (suspend_time / interval) << 24;
2825 scan_suspend_time = 0xFF0FFFFF &
2826 (extra | ((suspend_time % interval) * 1024));
2828 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2829 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2830 scan_suspend_time, interval);
2833 if (priv->scan_request->n_ssids) {
2835 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2836 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2837 /* always does wildcard anyway */
2838 if (!priv->scan_request->ssids[i].ssid_len)
2840 scan->direct_scan[p].id = WLAN_EID_SSID;
2841 scan->direct_scan[p].len =
2842 priv->scan_request->ssids[i].ssid_len;
2843 memcpy(scan->direct_scan[p].ssid,
2844 priv->scan_request->ssids[i].ssid,
2845 priv->scan_request->ssids[i].ssid_len);
2851 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2853 /* We don't build a direct scan probe request; the uCode will do
2854 * that based on the direct_mask added to each channel entry */
2855 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2856 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2857 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2859 /* flags + rate selection */
2861 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
2862 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2863 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2864 scan->good_CRC_th = 0;
2865 band = IEEE80211_BAND_2GHZ;
2866 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
2867 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2869 * If active scaning is requested but a certain channel
2870 * is marked passive, we can do active scanning if we
2871 * detect transmissions.
2873 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
2874 band = IEEE80211_BAND_5GHZ;
2876 IWL_WARN(priv, "Invalid scan band count\n");
2880 scan->tx_cmd.len = cpu_to_le16(
2881 iwl_fill_probe_req(priv,
2882 (struct ieee80211_mgmt *)scan->data,
2883 priv->scan_request->ie,
2884 priv->scan_request->ie_len,
2885 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2887 /* select Rx antennas */
2888 scan->flags |= iwl3945_get_antenna_flags(priv);
2890 if (iwl_is_monitor_mode(priv))
2891 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
2893 scan->channel_count =
2894 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2895 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
2897 if (scan->channel_count == 0) {
2898 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2902 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2903 scan->channel_count * sizeof(struct iwl3945_scan_channel);
2905 scan->len = cpu_to_le16(cmd.len);
2907 set_bit(STATUS_SCAN_HW, &priv->status);
2908 rc = iwl_send_cmd_sync(priv, &cmd);
2912 queue_delayed_work(priv->workqueue, &priv->scan_check,
2913 IWL_SCAN_CHECK_WATCHDOG);
2915 mutex_unlock(&priv->mutex);
2919 /* can not perform scan make sure we clear scanning
2920 * bits from status so next scan request can be performed.
2921 * if we dont clear scanning status bit here all next scan
2924 clear_bit(STATUS_SCAN_HW, &priv->status);
2925 clear_bit(STATUS_SCANNING, &priv->status);
2927 /* inform mac80211 scan aborted */
2928 queue_work(priv->workqueue, &priv->scan_completed);
2929 mutex_unlock(&priv->mutex);
2932 static void iwl3945_bg_up(struct work_struct *data)
2934 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2936 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2939 mutex_lock(&priv->mutex);
2941 mutex_unlock(&priv->mutex);
2944 static void iwl3945_bg_restart(struct work_struct *data)
2946 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2948 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2951 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2952 mutex_lock(&priv->mutex);
2955 mutex_unlock(&priv->mutex);
2957 ieee80211_restart_hw(priv->hw);
2960 queue_work(priv->workqueue, &priv->up);
2964 static void iwl3945_bg_rx_replenish(struct work_struct *data)
2966 struct iwl_priv *priv =
2967 container_of(data, struct iwl_priv, rx_replenish);
2969 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2972 mutex_lock(&priv->mutex);
2973 iwl3945_rx_replenish(priv);
2974 mutex_unlock(&priv->mutex);
2977 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2979 void iwl3945_post_associate(struct iwl_priv *priv)
2982 struct ieee80211_conf *conf = NULL;
2984 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2985 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
2990 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
2991 priv->assoc_id, priv->active_rxon.bssid_addr);
2993 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2996 if (!priv->vif || !priv->is_open)
2999 iwl_scan_cancel_timeout(priv, 200);
3001 conf = ieee80211_get_hw_conf(priv->hw);
3003 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3004 iwlcore_commit_rxon(priv);
3006 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3007 iwl_setup_rxon_timing(priv);
3008 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3009 sizeof(priv->rxon_timing), &priv->rxon_timing);
3011 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3012 "Attempting to continue.\n");
3014 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3016 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3018 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3019 priv->assoc_id, priv->beacon_int);
3021 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3022 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3024 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3026 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3027 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3028 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3030 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3032 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3033 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3037 iwlcore_commit_rxon(priv);
3039 switch (priv->iw_mode) {
3040 case NL80211_IFTYPE_STATION:
3041 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3044 case NL80211_IFTYPE_ADHOC:
3047 iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL);
3048 iwl3945_sync_sta(priv, IWL_STA_ID,
3049 (priv->band == IEEE80211_BAND_5GHZ) ?
3050 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3052 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3053 iwl3945_send_beacon_cmd(priv);
3058 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3059 __func__, priv->iw_mode);
3063 iwl_activate_qos(priv, 0);
3065 /* we have just associated, don't start scan too early */
3066 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3069 /*****************************************************************************
3071 * mac80211 entry point functions
3073 *****************************************************************************/
3075 #define UCODE_READY_TIMEOUT (2 * HZ)
3077 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3079 struct iwl_priv *priv = hw->priv;
3082 IWL_DEBUG_MAC80211(priv, "enter\n");
3084 /* we should be verifying the device is ready to be opened */
3085 mutex_lock(&priv->mutex);
3087 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3088 * ucode filename and max sizes are card-specific. */
3090 if (!priv->ucode_code.len) {
3091 ret = iwl3945_read_ucode(priv);
3093 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3094 mutex_unlock(&priv->mutex);
3095 goto out_release_irq;
3099 ret = __iwl3945_up(priv);
3101 mutex_unlock(&priv->mutex);
3104 goto out_release_irq;
3106 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3108 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3109 * mac80211 will not be run successfully. */
3110 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3111 test_bit(STATUS_READY, &priv->status),
3112 UCODE_READY_TIMEOUT);
3114 if (!test_bit(STATUS_READY, &priv->status)) {
3116 "Wait for START_ALIVE timeout after %dms.\n",
3117 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3119 goto out_release_irq;
3123 /* ucode is running and will send rfkill notifications,
3124 * no need to poll the killswitch state anymore */
3125 cancel_delayed_work(&priv->rfkill_poll);
3128 IWL_DEBUG_MAC80211(priv, "leave\n");
3133 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3137 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3139 struct iwl_priv *priv = hw->priv;
3141 IWL_DEBUG_MAC80211(priv, "enter\n");
3143 if (!priv->is_open) {
3144 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3150 if (iwl_is_ready_rf(priv)) {
3151 /* stop mac, cancel any scan request and clear
3152 * RXON_FILTER_ASSOC_MSK BIT
3154 mutex_lock(&priv->mutex);
3155 iwl_scan_cancel_timeout(priv, 100);
3156 mutex_unlock(&priv->mutex);
3161 flush_workqueue(priv->workqueue);
3163 /* start polling the killswitch state again */
3164 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3165 round_jiffies_relative(2 * HZ));
3167 IWL_DEBUG_MAC80211(priv, "leave\n");
3170 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3172 struct iwl_priv *priv = hw->priv;
3174 IWL_DEBUG_MAC80211(priv, "enter\n");
3176 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3177 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3179 if (iwl3945_tx_skb(priv, skb))
3180 dev_kfree_skb_any(skb);
3182 IWL_DEBUG_MAC80211(priv, "leave\n");
3183 return NETDEV_TX_OK;
3186 void iwl3945_config_ap(struct iwl_priv *priv)
3190 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3193 /* The following should be done only at AP bring up */
3194 if (!(iwl_is_associated(priv))) {
3196 /* RXON - unassoc (to set timing command) */
3197 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3198 iwlcore_commit_rxon(priv);
3201 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3202 iwl_setup_rxon_timing(priv);
3203 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3204 sizeof(priv->rxon_timing),
3205 &priv->rxon_timing);
3207 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3208 "Attempting to continue.\n");
3210 /* FIXME: what should be the assoc_id for AP? */
3211 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3212 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3213 priv->staging_rxon.flags |=
3214 RXON_FLG_SHORT_PREAMBLE_MSK;
3216 priv->staging_rxon.flags &=
3217 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3219 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3220 if (priv->assoc_capability &
3221 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3222 priv->staging_rxon.flags |=
3223 RXON_FLG_SHORT_SLOT_MSK;
3225 priv->staging_rxon.flags &=
3226 ~RXON_FLG_SHORT_SLOT_MSK;
3228 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3229 priv->staging_rxon.flags &=
3230 ~RXON_FLG_SHORT_SLOT_MSK;
3232 /* restore RXON assoc */
3233 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3234 iwlcore_commit_rxon(priv);
3235 iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL);
3237 iwl3945_send_beacon_cmd(priv);
3239 /* FIXME - we need to add code here to detect a totally new
3240 * configuration, reset the AP, unassoc, rxon timing, assoc,
3241 * clear sta table, add BCAST sta... */
3244 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3245 struct ieee80211_vif *vif,
3246 struct ieee80211_sta *sta,
3247 struct ieee80211_key_conf *key)
3249 struct iwl_priv *priv = hw->priv;
3252 u8 sta_id = IWL_INVALID_STATION;
3255 IWL_DEBUG_MAC80211(priv, "enter\n");
3257 if (iwl3945_mod_params.sw_crypto) {
3258 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3262 addr = sta ? sta->addr : iwl_bcast_addr;
3263 static_key = !iwl_is_associated(priv);
3266 sta_id = iwl_find_station(priv, addr);
3267 if (sta_id == IWL_INVALID_STATION) {
3268 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3274 mutex_lock(&priv->mutex);
3275 iwl_scan_cancel_timeout(priv, 100);
3276 mutex_unlock(&priv->mutex);
3281 ret = iwl3945_set_static_key(priv, key);
3283 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3284 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3288 ret = iwl3945_remove_static_key(priv);
3290 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3291 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3297 IWL_DEBUG_MAC80211(priv, "leave\n");
3302 /*****************************************************************************
3306 *****************************************************************************/
3308 #ifdef CONFIG_IWLWIFI_DEBUG
3311 * The following adds a new attribute to the sysfs representation
3312 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3313 * used for controlling the debug level.
3315 * See the level definitions in iwl for details.
3317 * The debug_level being managed using sysfs below is a per device debug
3318 * level that is used instead of the global debug level if it (the per
3319 * device debug level) is set.
3321 static ssize_t show_debug_level(struct device *d,
3322 struct device_attribute *attr, char *buf)
3324 struct iwl_priv *priv = dev_get_drvdata(d);
3325 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3327 static ssize_t store_debug_level(struct device *d,
3328 struct device_attribute *attr,
3329 const char *buf, size_t count)
3331 struct iwl_priv *priv = dev_get_drvdata(d);
3335 ret = strict_strtoul(buf, 0, &val);
3337 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3339 priv->debug_level = val;
3340 if (iwl_alloc_traffic_mem(priv))
3342 "Not enough memory to generate traffic log\n");
3344 return strnlen(buf, count);
3347 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3348 show_debug_level, store_debug_level);
3350 #endif /* CONFIG_IWLWIFI_DEBUG */
3352 static ssize_t show_temperature(struct device *d,
3353 struct device_attribute *attr, char *buf)
3355 struct iwl_priv *priv = dev_get_drvdata(d);
3357 if (!iwl_is_alive(priv))
3360 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3363 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3365 static ssize_t show_tx_power(struct device *d,
3366 struct device_attribute *attr, char *buf)
3368 struct iwl_priv *priv = dev_get_drvdata(d);
3369 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3372 static ssize_t store_tx_power(struct device *d,
3373 struct device_attribute *attr,
3374 const char *buf, size_t count)
3376 struct iwl_priv *priv = dev_get_drvdata(d);
3377 char *p = (char *)buf;
3380 val = simple_strtoul(p, &p, 10);
3382 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3384 iwl3945_hw_reg_set_txpower(priv, val);
3389 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3391 static ssize_t show_flags(struct device *d,
3392 struct device_attribute *attr, char *buf)
3394 struct iwl_priv *priv = dev_get_drvdata(d);
3396 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3399 static ssize_t store_flags(struct device *d,
3400 struct device_attribute *attr,
3401 const char *buf, size_t count)
3403 struct iwl_priv *priv = dev_get_drvdata(d);
3404 u32 flags = simple_strtoul(buf, NULL, 0);
3406 mutex_lock(&priv->mutex);
3407 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3408 /* Cancel any currently running scans... */
3409 if (iwl_scan_cancel_timeout(priv, 100))
3410 IWL_WARN(priv, "Could not cancel scan.\n");
3412 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3414 priv->staging_rxon.flags = cpu_to_le32(flags);
3415 iwlcore_commit_rxon(priv);
3418 mutex_unlock(&priv->mutex);
3423 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3425 static ssize_t show_filter_flags(struct device *d,
3426 struct device_attribute *attr, char *buf)
3428 struct iwl_priv *priv = dev_get_drvdata(d);
3430 return sprintf(buf, "0x%04X\n",
3431 le32_to_cpu(priv->active_rxon.filter_flags));
3434 static ssize_t store_filter_flags(struct device *d,
3435 struct device_attribute *attr,
3436 const char *buf, size_t count)
3438 struct iwl_priv *priv = dev_get_drvdata(d);
3439 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3441 mutex_lock(&priv->mutex);
3442 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3443 /* Cancel any currently running scans... */
3444 if (iwl_scan_cancel_timeout(priv, 100))
3445 IWL_WARN(priv, "Could not cancel scan.\n");
3447 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3448 "0x%04X\n", filter_flags);
3449 priv->staging_rxon.filter_flags =
3450 cpu_to_le32(filter_flags);
3451 iwlcore_commit_rxon(priv);
3454 mutex_unlock(&priv->mutex);
3459 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3460 store_filter_flags);
3462 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3464 static ssize_t show_measurement(struct device *d,
3465 struct device_attribute *attr, char *buf)
3467 struct iwl_priv *priv = dev_get_drvdata(d);
3468 struct iwl_spectrum_notification measure_report;
3469 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3470 u8 *data = (u8 *)&measure_report;
3471 unsigned long flags;
3473 spin_lock_irqsave(&priv->lock, flags);
3474 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3475 spin_unlock_irqrestore(&priv->lock, flags);
3478 memcpy(&measure_report, &priv->measure_report, size);
3479 priv->measurement_status = 0;
3480 spin_unlock_irqrestore(&priv->lock, flags);
3482 while (size && (PAGE_SIZE - len)) {
3483 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3484 PAGE_SIZE - len, 1);
3486 if (PAGE_SIZE - len)
3490 size -= min(size, 16U);
3496 static ssize_t store_measurement(struct device *d,
3497 struct device_attribute *attr,
3498 const char *buf, size_t count)
3500 struct iwl_priv *priv = dev_get_drvdata(d);
3501 struct ieee80211_measurement_params params = {
3502 .channel = le16_to_cpu(priv->active_rxon.channel),
3503 .start_time = cpu_to_le64(priv->last_tsf),
3504 .duration = cpu_to_le16(1),
3506 u8 type = IWL_MEASURE_BASIC;
3512 strncpy(buffer, buf, min(sizeof(buffer), count));
3513 channel = simple_strtoul(p, NULL, 0);
3515 params.channel = channel;
3518 while (*p && *p != ' ')
3521 type = simple_strtoul(p + 1, NULL, 0);
3524 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3525 "channel %d (for '%s')\n", type, params.channel, buf);
3526 iwl3945_get_measurement(priv, ¶ms, type);
3531 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3532 show_measurement, store_measurement);
3533 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3535 static ssize_t store_retry_rate(struct device *d,
3536 struct device_attribute *attr,
3537 const char *buf, size_t count)
3539 struct iwl_priv *priv = dev_get_drvdata(d);
3541 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3542 if (priv->retry_rate <= 0)
3543 priv->retry_rate = 1;
3548 static ssize_t show_retry_rate(struct device *d,
3549 struct device_attribute *attr, char *buf)
3551 struct iwl_priv *priv = dev_get_drvdata(d);
3552 return sprintf(buf, "%d", priv->retry_rate);
3555 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3559 static ssize_t show_channels(struct device *d,
3560 struct device_attribute *attr, char *buf)
3562 /* all this shit doesn't belong into sysfs anyway */
3566 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3568 static ssize_t show_statistics(struct device *d,
3569 struct device_attribute *attr, char *buf)
3571 struct iwl_priv *priv = dev_get_drvdata(d);
3572 u32 size = sizeof(struct iwl3945_notif_statistics);
3573 u32 len = 0, ofs = 0;
3574 u8 *data = (u8 *)&priv->statistics_39;
3577 if (!iwl_is_alive(priv))
3580 mutex_lock(&priv->mutex);
3581 rc = iwl_send_statistics_request(priv, 0);
3582 mutex_unlock(&priv->mutex);
3586 "Error sending statistics request: 0x%08X\n", rc);
3590 while (size && (PAGE_SIZE - len)) {
3591 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3592 PAGE_SIZE - len, 1);
3594 if (PAGE_SIZE - len)
3598 size -= min(size, 16U);
3604 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3606 static ssize_t show_antenna(struct device *d,
3607 struct device_attribute *attr, char *buf)
3609 struct iwl_priv *priv = dev_get_drvdata(d);
3611 if (!iwl_is_alive(priv))
3614 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3617 static ssize_t store_antenna(struct device *d,
3618 struct device_attribute *attr,
3619 const char *buf, size_t count)
3621 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3627 if (sscanf(buf, "%1i", &ant) != 1) {
3628 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3632 if ((ant >= 0) && (ant <= 2)) {
3633 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3634 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3636 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3642 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3644 static ssize_t show_status(struct device *d,
3645 struct device_attribute *attr, char *buf)
3647 struct iwl_priv *priv = dev_get_drvdata(d);
3648 if (!iwl_is_alive(priv))
3650 return sprintf(buf, "0x%08x\n", (int)priv->status);
3653 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3655 static ssize_t dump_error_log(struct device *d,
3656 struct device_attribute *attr,
3657 const char *buf, size_t count)
3659 struct iwl_priv *priv = dev_get_drvdata(d);
3660 char *p = (char *)buf;
3663 iwl3945_dump_nic_error_log(priv);
3665 return strnlen(buf, count);
3668 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3670 static ssize_t dump_event_log(struct device *d,
3671 struct device_attribute *attr,
3672 const char *buf, size_t count)
3674 struct iwl_priv *priv = dev_get_drvdata(d);
3675 char *p = (char *)buf;
3678 iwl3945_dump_nic_event_log(priv);
3680 return strnlen(buf, count);
3683 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
3685 /*****************************************************************************
3687 * driver setup and tear down
3689 *****************************************************************************/
3691 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3693 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3695 init_waitqueue_head(&priv->wait_command_queue);
3697 INIT_WORK(&priv->up, iwl3945_bg_up);
3698 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3699 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3700 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3701 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3702 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3703 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3704 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3705 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3706 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3707 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3709 iwl3945_hw_setup_deferred_work(priv);
3711 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3712 iwl3945_irq_tasklet, (unsigned long)priv);
3715 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3717 iwl3945_hw_cancel_deferred_work(priv);
3719 cancel_delayed_work_sync(&priv->init_alive_start);
3720 cancel_delayed_work(&priv->scan_check);
3721 cancel_delayed_work(&priv->alive_start);
3722 cancel_work_sync(&priv->beacon_update);
3725 static struct attribute *iwl3945_sysfs_entries[] = {
3726 &dev_attr_antenna.attr,
3727 &dev_attr_channels.attr,
3728 &dev_attr_dump_errors.attr,
3729 &dev_attr_dump_events.attr,
3730 &dev_attr_flags.attr,
3731 &dev_attr_filter_flags.attr,
3732 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3733 &dev_attr_measurement.attr,
3735 &dev_attr_retry_rate.attr,
3736 &dev_attr_statistics.attr,
3737 &dev_attr_status.attr,
3738 &dev_attr_temperature.attr,
3739 &dev_attr_tx_power.attr,
3740 #ifdef CONFIG_IWLWIFI_DEBUG
3741 &dev_attr_debug_level.attr,
3746 static struct attribute_group iwl3945_attribute_group = {
3747 .name = NULL, /* put in device directory */
3748 .attrs = iwl3945_sysfs_entries,
3751 static struct ieee80211_ops iwl3945_hw_ops = {
3752 .tx = iwl3945_mac_tx,
3753 .start = iwl3945_mac_start,
3754 .stop = iwl3945_mac_stop,
3755 .add_interface = iwl_mac_add_interface,
3756 .remove_interface = iwl_mac_remove_interface,
3757 .config = iwl_mac_config,
3758 .configure_filter = iwl_configure_filter,
3759 .set_key = iwl3945_mac_set_key,
3760 .get_tx_stats = iwl_mac_get_tx_stats,
3761 .conf_tx = iwl_mac_conf_tx,
3762 .reset_tsf = iwl_mac_reset_tsf,
3763 .bss_info_changed = iwl_bss_info_changed,
3764 .hw_scan = iwl_mac_hw_scan
3767 static int iwl3945_init_drv(struct iwl_priv *priv)
3770 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3772 priv->retry_rate = 1;
3773 priv->ibss_beacon = NULL;
3775 spin_lock_init(&priv->lock);
3776 spin_lock_init(&priv->sta_lock);
3777 spin_lock_init(&priv->hcmd_lock);
3779 INIT_LIST_HEAD(&priv->free_frames);
3781 mutex_init(&priv->mutex);
3783 /* Clear the driver's (not device's) station table */
3784 iwl_clear_stations_table(priv);
3786 priv->data_retry_limit = -1;
3787 priv->ieee_channels = NULL;
3788 priv->ieee_rates = NULL;
3789 priv->band = IEEE80211_BAND_2GHZ;
3791 priv->iw_mode = NL80211_IFTYPE_STATION;
3793 iwl_reset_qos(priv);
3795 priv->qos_data.qos_active = 0;
3796 priv->qos_data.qos_cap.val = 0;
3798 priv->rates_mask = IWL_RATES_MASK;
3799 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3801 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3802 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3807 ret = iwl_init_channel_map(priv);
3809 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3813 /* Set up txpower settings in driver for all channels */
3814 if (iwl3945_txpower_set_from_eeprom(priv)) {
3816 goto err_free_channel_map;
3819 ret = iwlcore_init_geos(priv);
3821 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3822 goto err_free_channel_map;
3824 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3828 err_free_channel_map:
3829 iwl_free_channel_map(priv);
3834 static int iwl3945_setup_mac(struct iwl_priv *priv)
3837 struct ieee80211_hw *hw = priv->hw;
3839 hw->rate_control_algorithm = "iwl-3945-rs";
3840 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3842 /* Tell mac80211 our characteristics */
3843 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3844 IEEE80211_HW_NOISE_DBM |
3845 IEEE80211_HW_SPECTRUM_MGMT |
3846 IEEE80211_HW_SUPPORTS_PS |
3847 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3849 hw->wiphy->interface_modes =
3850 BIT(NL80211_IFTYPE_STATION) |
3851 BIT(NL80211_IFTYPE_ADHOC);
3853 hw->wiphy->custom_regulatory = true;
3855 /* Firmware does not support this */
3856 hw->wiphy->disable_beacon_hints = true;
3858 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3859 /* we create the 802.11 header and a zero-length SSID element */
3860 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
3862 /* Default value; 4 EDCA QOS priorities */
3865 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3866 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3867 &priv->bands[IEEE80211_BAND_2GHZ];
3869 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3870 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3871 &priv->bands[IEEE80211_BAND_5GHZ];
3873 ret = ieee80211_register_hw(priv->hw);
3875 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3878 priv->mac80211_registered = 1;
3883 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3886 struct iwl_priv *priv;
3887 struct ieee80211_hw *hw;
3888 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3889 struct iwl3945_eeprom *eeprom;
3890 unsigned long flags;
3892 /***********************
3893 * 1. Allocating HW data
3894 * ********************/
3896 /* mac80211 allocates memory for this device instance, including
3897 * space for this driver's private structure */
3898 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3900 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3905 SET_IEEE80211_DEV(hw, &pdev->dev);
3908 * Disabling hardware scan means that mac80211 will perform scans
3909 * "the hard way", rather than using device's scan.
3911 if (iwl3945_mod_params.disable_hw_scan) {
3912 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3913 iwl3945_hw_ops.hw_scan = NULL;
3917 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3919 priv->pci_dev = pdev;
3920 priv->inta_mask = CSR_INI_SET_MASK;
3922 #ifdef CONFIG_IWLWIFI_DEBUG
3923 atomic_set(&priv->restrict_refcnt, 0);
3925 if (iwl_alloc_traffic_mem(priv))
3926 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3928 /***************************
3929 * 2. Initializing PCI bus
3930 * *************************/
3931 if (pci_enable_device(pdev)) {
3933 goto out_ieee80211_free_hw;
3936 pci_set_master(pdev);
3938 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3940 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3942 IWL_WARN(priv, "No suitable DMA available.\n");
3943 goto out_pci_disable_device;
3946 pci_set_drvdata(pdev, priv);
3947 err = pci_request_regions(pdev, DRV_NAME);
3949 goto out_pci_disable_device;
3951 /***********************
3952 * 3. Read REV Register
3953 * ********************/
3954 priv->hw_base = pci_iomap(pdev, 0, 0);
3955 if (!priv->hw_base) {
3957 goto out_pci_release_regions;
3960 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3961 (unsigned long long) pci_resource_len(pdev, 0));
3962 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3964 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3965 * PCI Tx retries from interfering with C3 CPU state */
3966 pci_write_config_byte(pdev, 0x41, 0x00);
3968 /* this spin lock will be used in apm_ops.init and EEPROM access
3969 * we should init now
3971 spin_lock_init(&priv->reg_lock);
3974 err = priv->cfg->ops->lib->apm_ops.init(priv);
3976 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
3980 /***********************
3982 * ********************/
3984 /* Read the EEPROM */
3985 err = iwl_eeprom_init(priv);
3987 IWL_ERR(priv, "Unable to init EEPROM\n");
3990 /* MAC Address location in EEPROM same for 3945/4965 */
3991 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3992 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
3993 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3994 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3996 /***********************
3997 * 5. Setup HW Constants
3998 * ********************/
3999 /* Device-specific setup */
4000 if (iwl3945_hw_set_hw_params(priv)) {
4001 IWL_ERR(priv, "failed to set hw settings\n");
4002 goto out_eeprom_free;
4005 /***********************
4007 * ********************/
4009 err = iwl3945_init_drv(priv);
4011 IWL_ERR(priv, "initializing driver failed\n");
4012 goto out_unset_hw_params;
4015 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4018 /***********************
4020 * ********************/
4022 spin_lock_irqsave(&priv->lock, flags);
4023 iwl_disable_interrupts(priv);
4024 spin_unlock_irqrestore(&priv->lock, flags);
4026 pci_enable_msi(priv->pci_dev);
4028 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4029 IRQF_SHARED, DRV_NAME, priv);
4031 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4032 goto out_disable_msi;
4035 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4037 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4038 goto out_release_irq;
4041 iwl_set_rxon_channel(priv,
4042 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4043 iwl3945_setup_deferred_work(priv);
4044 iwl3945_setup_rx_handlers(priv);
4046 /*********************************
4047 * 8. Setup and Register mac80211
4048 * *******************************/
4050 iwl_enable_interrupts(priv);
4052 err = iwl3945_setup_mac(priv);
4054 goto out_remove_sysfs;
4056 err = iwl_dbgfs_register(priv, DRV_NAME);
4058 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4060 /* Start monitoring the killswitch */
4061 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4067 destroy_workqueue(priv->workqueue);
4068 priv->workqueue = NULL;
4069 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4071 free_irq(priv->pci_dev->irq, priv);
4073 pci_disable_msi(priv->pci_dev);
4074 iwlcore_free_geos(priv);
4075 iwl_free_channel_map(priv);
4076 out_unset_hw_params:
4077 iwl3945_unset_hw_params(priv);
4079 iwl_eeprom_free(priv);
4081 pci_iounmap(pdev, priv->hw_base);
4082 out_pci_release_regions:
4083 pci_release_regions(pdev);
4084 out_pci_disable_device:
4085 pci_set_drvdata(pdev, NULL);
4086 pci_disable_device(pdev);
4087 out_ieee80211_free_hw:
4088 ieee80211_free_hw(priv->hw);
4089 iwl_free_traffic_mem(priv);
4094 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4096 struct iwl_priv *priv = pci_get_drvdata(pdev);
4097 unsigned long flags;
4102 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4104 iwl_dbgfs_unregister(priv);
4106 set_bit(STATUS_EXIT_PENDING, &priv->status);
4108 if (priv->mac80211_registered) {
4109 ieee80211_unregister_hw(priv->hw);
4110 priv->mac80211_registered = 0;
4115 /* make sure we flush any pending irq or
4116 * tasklet for the driver
4118 spin_lock_irqsave(&priv->lock, flags);
4119 iwl_disable_interrupts(priv);
4120 spin_unlock_irqrestore(&priv->lock, flags);
4122 iwl_synchronize_irq(priv);
4124 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4126 cancel_delayed_work_sync(&priv->rfkill_poll);
4128 iwl3945_dealloc_ucode_pci(priv);
4131 iwl3945_rx_queue_free(priv, &priv->rxq);
4132 iwl3945_hw_txq_ctx_free(priv);
4134 iwl3945_unset_hw_params(priv);
4135 iwl_clear_stations_table(priv);
4137 /*netif_stop_queue(dev); */
4138 flush_workqueue(priv->workqueue);
4140 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4141 * priv->workqueue... so we can't take down the workqueue
4143 destroy_workqueue(priv->workqueue);
4144 priv->workqueue = NULL;
4145 iwl_free_traffic_mem(priv);
4147 free_irq(pdev->irq, priv);
4148 pci_disable_msi(pdev);
4150 pci_iounmap(pdev, priv->hw_base);
4151 pci_release_regions(pdev);
4152 pci_disable_device(pdev);
4153 pci_set_drvdata(pdev, NULL);
4155 iwl_free_channel_map(priv);
4156 iwlcore_free_geos(priv);
4158 if (priv->ibss_beacon)
4159 dev_kfree_skb(priv->ibss_beacon);
4161 ieee80211_free_hw(priv->hw);
4165 /*****************************************************************************
4167 * driver and module entry point
4169 *****************************************************************************/
4171 static struct pci_driver iwl3945_driver = {
4173 .id_table = iwl3945_hw_card_ids,
4174 .probe = iwl3945_pci_probe,
4175 .remove = __devexit_p(iwl3945_pci_remove),
4177 .suspend = iwl_pci_suspend,
4178 .resume = iwl_pci_resume,
4182 static int __init iwl3945_init(void)
4186 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4187 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4189 ret = iwl3945_rate_control_register();
4191 printk(KERN_ERR DRV_NAME
4192 "Unable to register rate control algorithm: %d\n", ret);
4196 ret = pci_register_driver(&iwl3945_driver);
4198 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4199 goto error_register;
4205 iwl3945_rate_control_unregister();
4209 static void __exit iwl3945_exit(void)
4211 pci_unregister_driver(&iwl3945_driver);
4212 iwl3945_rate_control_unregister();
4215 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4217 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
4218 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4219 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
4220 MODULE_PARM_DESC(swcrypto,
4221 "using software crypto (default 1 [software])\n");
4222 #ifdef CONFIG_IWLWIFI_DEBUG
4223 module_param_named(debug, iwl_debug_level, uint, 0644);
4224 MODULE_PARM_DESC(debug, "debug output mask");
4226 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
4227 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4228 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
4229 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4231 module_exit(iwl3945_exit);
4232 module_init(iwl3945_init);